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2) Covered, 105'. There seems to be a few quartz rich calcarenite, and rubbly limestone (?), but mostly shale in this interval. Collection 8/3/57/1 at top. 3) Organic frag. Limestone, orange-brown near base light brown higher, in bed 6" to 1', 1' to 2'; eight gray shale interbeds. 44'. Collection 8/3/57/2 near base. 4) Covered 25'. 5) Conglomerate; light gray, many limestone cobbles here. Almost a pure calcarudite. Small boulders up to 10" diameter. Collection 8/3/57/3. 8' exposed; One pebble or cobble in this collect has fusulines and seems to be related to the organic frag. Limestone #3 (which is definitely present in this conglomerate). PG.3 8/4/57 Dugout Mt. 1-21 Collection 8/4/57/1 - Above rubble and conglomerate in well bedded Hess Limestone; this bed helps form NW dip slope of the Knolls on SW extent of Dugout MT. - This is from the SW side of 2nd knob NE of the SW end of Mt. Collection 8/4/57/2 - Fossil wood found loose on Wolfcamp Conglomerate slope. This is near concrete tank on top of Wolfcamp ridge extending NE of Dugout Mt.; no other source for these fragment obvious, I assume it to be from Wolfcamp, conglomerate. Collection 8/4/57/3 - near base of Wolfcamp slope and near Gaptank (?) contact with Wolfcamp. The lower most Wolfcamp conglomerate here is a breccia of chert fragments with siliceous hematite cement. I would like to suggest this represents the untouched (more or less) thrust sheet breccia and it served as a gravel veneer pavement over the smooth surface of the truncated and folded Gaptank. Silica and hematite (lateritic times?) combined to cement the lower part together (of the Wolfcamp formation as defined or interpreted.). This might fully explain some of the breccias on the Decie Ranch. PG. 4 The NE ridge of the Dugout Mt. ridges contains Wolfcamp which swings about in strike to about N80°E. - This I would judge is a change from about N60°E (to SW). Oh for some photographs. The Gaptank goes through some beautiful folds and contortions. The small folds and faults near the top of the Gaptank I feel are geol. evidence for the extent of thrusting. PG. 5 8/5/57 Section 1 SW knob of Dugout Mt.; Sect. 24.
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1) Gaptank below is nearly vertical and strikes approximately S45°W. Here it is a reddish to yellowish-brown with a high % of CaCO3, mostly sandstone, some shale and siltstone. 2) Covered 13'. 3) Limestone, reddish-brown weathering, very sandy (very fine sand, quartz) high porosity, has specks of dark material dispersed, 1mm or less in size. 5'. 8/5/57/1. 4) Covered 7', probably much like #3. 5) Calcarenite, medium gray weathering, medium sand size. No identifiable fossils. 2.5' (a few crinoid columns). 6) Covered 2'. 7) Limestone, brownish-gray weathering, very silty, upper 2" are intraformational conglomerate. 1.5'. 8) Covered 4'. PG. 6 9) Limestone, medium gray weathering, a fusuline limestone. 8/5/57/2; 3'. 10) Covered, 3'. 11) Limestone, light gray, fine grained with fusuline. 1' to 3' beds, 8', 8/5/57/3. This unit has a vertical (weathering) fracture. 12) Covered 2'. 13) Limestone, light gray like #11, but more abundant fusulines. 8/5/57/4, 6'. 14) Limestone, light yellow-brown weathering, very sandy and silty; beds 6" to 3', 12' total. 15) Limestone, medium to dark gray, very fine grain CaCO3, a calcarudite, upwards gets mottled brown from siliceous silts, 7'. 8/5/57/5. PG. 7 16) Limestone, light gray, dense, vertical fracturing to weathering, a calcilitute, 19', in bed 8" to 2.5' - Collection 8/5/57/6. Lenox Hills Fm '95. 17) Calcarudite; massive, 3' blocks in it, mostly has of those lithologies #2-16 but a few Gaptank types. Top is nearly flat, has some rubble marks, a dark brown silica rich surface, 22'. 18) Sandstone, light brown, very silt rich in laminate of 1/16" or less, variable thickness, about 5' here. 19) Limestone, medium-dark gray, massive, has just about every thing mentionable in it. Biohermal, 35' top of unit has fault, siliceous surface. Collection 8/5/57/7, 1' below top. 20) Like #18, 3'. 21) Limestone, conglomeratic near base, biohermal near top, yellow or tan-gray, top is flat with 2" band on dark brown siliceous cap; total 4'. PG. 8 22) Limestone, brownish-gray weathering, calcarenite and fine calcarudite. 1' to top of ridge (knoll). Collection 8/5/57/8 on top of ridge.
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The SE 20'-30' seem to be faulted down about 10'; It should make no difference because this section was measured on the SE side of this fault. {note: illustration followed}. PG.9 Collection 8/5/57/9 - Collection from a Gaptank calcarenite fairly high in section, but exact position stratigraphically not known. On examining P.King's map and text this unit may be lowest gray granular limestone at the base of the Gaptank. Concerning section 24, what is Wolfcamp and what is Hess; if we take the conglomerate section (#17) as the base the Hess, where do the lower limestone beds fit - luckily the fusulines should help a lot. There is no Wolfcamp conglomerate here or at least none cropping out. If it is here it must be very thin. The cobbles in section 25 on outward appearance seem to represent some of the rocks in this limestone sequence. This will bear further checking. PG. 10 Section 25, NE end of Dugout Mt. Ridge; Measured on line N22°E from tin shack, dip here is variable but between 15° to 30° to the NNE in the Wolfcamp conglomerate. 1) Covered, probably Gaptank. 2) Calcarudite, lowest certain bedrock exposure, much sand (brown) and chert pebbles, at least 140' thick, probably about 160' including changes of dip and covered base. Collection 8/5/57/10 (2 bags) at about 110'. 3) Covered, 12', perhaps conglomerate, maybe not. ?top of Lenox Hills Fm.?. 4) Conglomerate, chert, quartzite % increase over limestone. Brown sands more apparent. 15'. Collection 8/5/57/11. 5) Conglomerate and covered intervals. This is down a dip slope with a number of folds and faults. I estimate the thickness of conglomerate here to be 150'. The upper beds become more calcic and the amount of organic fragments increase greatly, a few beds are calcarenites and some are sandstones (very fine) and shale and silts. PG. 11 These form a transition in the upper 40' into the next unit. {note: illustration followed} To be continued! - [but it wasn't] PG. 12 8/6/57 Section 24 (4) - up Highest point on Dugout Mt. covered below - contact with Gaptank Fm. not visible. 1) Conglomerate, large boulder 10"-17" diameter are common. The larger ones are limestone, but many smaller pebbles are chert and quartzite (fracture pattern of rock). Thickness at least 30'. 2) Sandstone, light yellow and brown, friable, very fine sand, poorly cemented with calcite. 4'.
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3) Shale, blue-gray with some brownish stringers, becomes more sandy upwards, very silty throughout, 67'; Collection 8/6/57/8. 4) Calcarenite, has dark-brown color fresh surface contains brachiopods, crinoid stems and a few fusulines (Paraschwagerina?) 2'-2.5'. 8/6/57/1. 5) Sandstone; light brown; has a tinge of green 2'. 6) Calcarenite, like #4; 6". PG. 13 7) Siltstone and shales, brown to light brown, 2' exposed. 8) Covered, 25'. ~133', Top Lenox Hills Fm. 9) "Hess Conglo", calcarudite, Boulders 4' diameter nearly all limestone, little chert or quartzite; massive 44'. 10) Limestone, light brownish-gray, well bedded in 1'-4' beds, lower 6' contain brown chert and quartzite pebbles; 26'; Collection 8/6/57/2. 11) Conglomerate. 1.5" to 2" chert and quartzite pebbles - 0' to 2' thick. 12) Limestone, light gray weathering, dense, no good bedding planes. 3'. Collection 8/6/57/3. 13) Conglomerate. Chert, quartzite, limestone; all well rounded; up to 6' diameter. 17' thick. Collection 8/6/57/7. PG. 14 14) Sandstone, medium brown, very silty, 5'. 15) Calcarenite, medium to coarse grained, dark gray weathering, fetid as are most of these limestone. 2'. Collection 8/6/57/4. 16) Sandstone and siltstone; light to light orangish-brown weathering. 19'. 17) Calcarenite and fine chert and quartzite conglomerate pebbles, bryozoans of many shapes and sizes; sponges (?), a few small brachiopods, crinoids stem segments. All look a little battered. 2'. 18) Covered, 29', probably mostly brown sand and siltstone. (Collection 8/6/57/6 float). 19) Like #17, 6". 20) Sandstone and siltstone, brown weathering, 24'. 21) Calcarenite, very fine grained, and gray weathering; very quartzic in spots; Siliceous bands 1/2" commons, 4'-4.5'. PG. 15 22) Sandstone and siltstone, light brown weathering, 1/16" beds or laminae; 31'. This is topped by a very fine grained calcarenite, 6" to 8" thick; has a 1/4" siliceous rich nearly fault top. 23) Conglomerate; medium brown weathering; up to 5" diameter. Cobbles in middle of unit. Bottom and top finer (1" or less) top is gradational with well laminated brown medium sandstone, well cemented (siliceous and calcic) about 2" thick; total 3.5'. 24) Sandstone, light brown, 1/16" laminae, porous and friable. 1.5'.
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25) Calcarenite, orange-brown weathering, dark gray to dark brown fresh; medium to coarse grain size; crinoid stem segments, bryozoans, broken brachiopod plates; 8". 26) Sandstone, very silty; dark greenish gray. 1.5'. PG. 16 27) Calcarenite, like #25; 2'. Collection 8/6/57/5. 28) Calcaremites like #25 and interbedded brown sandstones like #24. 5 limestone and 5 ss. Total 8'. Brown silicified band at top limestone common. 29) Covered 14'. 30) Limestone, light gray weathering; 1"-3" diameter quartzite and chert pebbles. 20' 1st Leonard limestone. see P.Kings correlation charts. Collection 8/6/57/6 - I think this float is coming from about the middle of this covered interval, but I can't be sure. The NE ridge of Dugout Mt. is a maze of little faults and darn peculiar. The tank at the top of the gap is on Wolfcamp conglomerate. The conglomerate here is thin but thicker SW and NE. Could this be a hill in the Gaptank formation? The other explanation is the conglomerate (combined Hess and Wolfcamp) pass into the calcarenite zone of the Hess (Leonard?). PG. 17 I don't believe that structure; folding and faulting, can by itself explain the position of the strata. The changes in lithology are great enough in other parts of this interval to expect something like this as possible. Aerial photos would be a great help! (see pg. 117). 8/7/57 - The two maps, P.Kings and Guide Book don't agree. I think King's is probably the more accurate, the other is non-field checked photomaps. I think I need Aerial photographs to do much more there (Dugout Mt. area) of significance. {note: illustration followed}. PG. 18 8/8/57 Collection 8/8/57/1 - This is a collection from a new road cut through the Tenus about 12 miles east of Marathon. This collection is from a shale interval exposure in an anticline and are older the next collection. Collection 8/8/57/2 - Same locality as 8/8/57/1, but from a sandstone horizon higher in the section. These are on the west limb of an recumbent anticline and the beds are vertical to slightly overturned. The harder shale were sampled for a representative collection. Collection 8/8/57/3 Shales from Dimple 1/2 east of 8/8/57/1+2. Collection 8/8/57/4 - Limestone, from Dimple, location as 8/8/57/3. Collection 8/8/57/5 - Sandstone from Haymond 1/2 mile east of location 3+4. PG. 19 Collection 8/8/57/6 - shale, same location as 8/8/57/5/
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Shipped 140# of rocks to Peabody Museum. PG. 20 8/9/57 Sect. 3 Dugout Mt. Section 27, 1/4-1/3 miles SW of section 26; 1) Gaptank, orange-brown sandstones, angular unconformity. 2) Covered - 4'. 3) Sandstone, light tan to light gray, medium to coarse quartz sand (worm burrows, plant stem imprint, some calcite grains and cement; a few granules - and a few fusulines, 6" to 1' beds - 18'. 8/9/57/2. 4) Conglomerate, mostly very small pebbles; some upper 1.5" diameter; large % of sands, light color; most of the pebbles are dark brown chert; 8'. 5) Like #3, but with a few bands (6" to 1') of conglomerate like #4; both lithology are lenticular, 10'; laminar flat brown top ! 6) Sandstone, mottle lt. green and light orange-brown, irregular bedding, very silty; 8'. PG. 21 7) Shale; bluish-gray; very silty and limy, 16'. (8/9/57/1). 8) Covered, 87'. Top of Lenox Hills F. 151' 9) Calcarudite, medium to dark gray, some brown sandstone cobbles here; some medium pebbles of chert. {note: illustration: bed 1: Gaptank bed 3: 8/9/57/2 bed 7: 8/9/57/1 bed 8: 8/9/57/3; 8/9/57/4 bed 9: Hess} Collection 8/9/57/3 - a biohermal limestone, orange-brown weathering; 1/4 mile SW of section 27. This is in the middle of a gray shale interval. I believe the limestone to be in place. PG. 22 There is another limestone similar to this one, about 40' higher; This could be slump from that. Collection 8/9/57/4 - From near the middle of the Wolfcamp in the stream gully which forms the 1st wind gap SW of the peak. It is from the higher interval, equivalent to the 2nd biohermal limestone. The entire Wolfcamp here seems to have alterations of brown-orange sandstone and gray shales. There is just some question where the Wolfcamp and Gaptank should be split. The Gaptank forms an anticline beneath the ridge at this point; the beds I've called Wolfcamp may be the evenly dipping beds of this Gaptank anticline. It
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seems evident from the general relationships that the Wolfcamp thins appreciably here as it passes the crest of this structure and also that the source of the Wolfcamp deposits here are the sandstones of the Gaptank, not Dev. cherts! PG. 23 There is no chert conglomerate and indeed scarcely any conglomerate at all. The friable Gaptank ss didn't remain pebble size very long. Collection 8/9/57/5 - in the S Western most Windgap - about 25' down on SE side. Limestone, brown-gray, very conglomeratic, 1/2" to 1" chert and limestone pebbles. This seems to be within the Wolfcamp interval. I would guess judging from the beds above and below, this is near bed 15 Section 23. [This is Section 2 (note: "2" is circled) in Memior 88.] Section 28 - SW windgap; Dugout Mt. Covered below - approximately 20' (?) above angular unconformity with Gaptank. 1) Limestone, brownish-gray weathering, very conglomeratic, see note about Collection 8/9/57/5. 12'. 2) Sandstone and siltstone, light brown, friable, 1/4" to 1/2" bedding; 25'. 3) Calcarenite, mud grayish-brown; coarse sand sizes; a few poorly preserved fusulines and other organic frags. 4'; 6" beds. PG. 24 4) Limestone, medium gray, massive, organic frag. Crinoid stems abundant; 3'. 5) Limestone, dark gray, 3" to 6" beds, 5'. 6) Limestone, light tan on weathered surface; 1' beds, very silty beds, splotches of darker brown and gray within 1 or 2 dark limestone layers, (Collection 8/9/57/6). 6'. 7) Covered, dip slope, I estimate 15' (?) to base of Hess conglomerate. The Hess Conglomerate has slumped to a point nearly even with this bed. The Wolfcamp is angularly disconformable with the Hess at this point. 10°-15°. Collection 8/9/57/7 - talus from Wolfcamp slope near the middle Windgap SW of Dugout Mt. about 100' below Hess ledge - These rocks I feel quite certain are from the Wolfcamp interval [based on color primary and general topographic relations]. PG. 25 Collection 8/9/57/8 - Outcrop about 80' below Hess ledge. This is not Gaptank as far as field relations show. I think this is the zone that Collection 8/9/57/7 were originating from. There seems to be a lot of blue-gray shale in this interval. Large Hess boulders cover the slope above. {note: illustration followed}
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PG. 26 8/10/57 see King 1930, p. 121 who examined Bk Peak on south side. My notes are made from the north side. Black Peak Sect. 28 8/10/57/1 - Limestone float from main massive peak. 8/10/57/2 - from very dark gray fetid limestone at top of lower lying ridge just at south east-base of Black. John Skinner says this is Bend or Lampasian - in age, Aug. 29, 1957. {note: illustration: LOC 59 and LOC 60: bed 1: Thrust fault underneath; Gaptank? bed 2: Covered; 8/10/57/1 bed 3: 8/10/57/3 bed 4: 8/10/57/2} 1) Limestone, most dark gray, some mottled patterns in the strata; fossils are scarce, a few corals and crinoid columns; about 90'; Collection 8/10/57/1. 2) Covered, 40'; In a stream cut, some badly shattered and fractured "shale" which is mostly green siltstones and green-brown sandstones (weathering red- brown). These seem to be similar in lithology to parts of the Haymond and parts of the Gaptank near Dugout Mt. PG. 27 3) Shales, black, organic, with some silts. 1/8" to 1/4" bedding; a few sandy zones or beds; 60'; the sandy zones weather red-brown. Collection 8/10/57/3. (thrown out). 4) Limestone, very dark gray to black limestone, some bedding surfaces are silicified with a brownish colored material; beds 1" to 2'; 40'. Collection 8/10/57/2. 5) Covered above. The color and general lithology reminds me of the Hueco on from Underwood's area in the Eagle Mts. These shales are more organic, but the approximate % are roughly similar. The Black Peak area has been faulted and distorted badly so that while these figures are only approximate, I would judge these are minimum figures rather than maximum. The little fusulines from 8/10/57/2 are like none I've seen before. They are larger then the Scherhertella's and appear to be Triticites from field examination. The rock facies here seem to be quite strange for this part of the west Texas region. PG. 28 8/12/57 Type Areas of Gaptank Fm. Collection 8/12/57/1 - from Gaptank #1 conglomerate member of P.King, at Allison Ranch south fence.
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Collection 8/12/57/2 - 15' stratigraphically above #1 still in conglomerate #1. Collection 8/12/57/3 - from P.King's #2 conglomerate; one package of cobbles; one of sand size matrix. Collection 8/12/57/4 - from a greenish-gray shale at the base of #3 conglomerate of P.King. Collection 8/12/57/5 - pebbles from #4 conglomerate bed of King. Collection 8/12/57/6 - from calcarenite atop of #5 conglomerate of King. The calcarenite definitely interfigures, with the conglomerate here. {note: illustration followed} Collection 8/12/57/7 - from limestone #1 of P.King; shell hash. PG. 29 {note: illustration: conglo#1: 8/12/57/1; 8/12/57/2. conglo#2: 8/12/57/3 ss., shale conglo#3: 8/12/57/4 ss conglo#4: 8/12/57/5 conglo#5: 8/12/57/6 limest#1: 8/12/57/7 limest#2: 8/12/57/8} 8/12/57/8 - from limestone #2 interval 8/12/57/9 - from limestone #4 8/12/57/10 - from limestone #5 in road cut. {note: illustration: limest#3: 8/12/57/11 limest#4: 8/12/57/9 limest#5: 8/12/57/10} PG. 30 8/13/57 Wolfcamp Hills, SW end, Hess fm. Collection 8/13/57/1- bed #3 of Hess in King's Section 23. Collection 8/13/57/2 - in bed 4 of King's Sect. 23, Hess. Collection 8/13/57/3 - about 20' higher than 8/13/57/1 in bed #3. Collection 8/13/57/4 - From Hess Conglomerate Interval; King's section 23. These are fairly high in the Hess but seem to represent the lowest occurrence of these fusulines. The collection 8/13/57/4 seems to contain both reworked older fusulines and Hess fusulines in the sand size matrix. PG. 31 Two forest Oil Co. geologists out of Midland, Mr. Dillinger (?) and Mr. Harding, who are under Mr. Wayne Moore, arrived to study the oil possibilities in the Moore and Walker Ranches. They pumped me for information of which I'm
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afraid I have relative little at this time. They said that Mr. Moore had agreed to allow me on his ranch and that they believed they could get logs and samples from a number of wells to the north. I said I would contact them later this year after talking to C.O.D. about this subsurface angle. Their interest here is a 9 year affair so they may have some pretty sincere thoughts toward a study. Their primary objective seems to be 1) stratigraphic pinch outs or erosional truncation of Wolfcamp; 2) Finding some type of PrePen structure beneath it all, they had hopes of some stratigraphic test wells but not for some time yet. They hope that if the Low. Penn. can be worked out, the first step toward understanding the late Penn. will be made. PG. 32 8/15/57 Examined Hess section in Geologist Canyon, Wolfcamp Hills. King's Section 24. 1) Conglomerate (of Hess) 45'-50' 32) Covered - ? (260') 33) Dolomite, very sandy and silty, brown weathering. Collection 8/15/57/1 1'-2' beds. [6']. Top of measured interval. 34) Limestone, shale, dolomite sequence, 6" to 2' bedding; dolomite is similar to #3 and is dominant near bottom of unit. Shales are common throughout unit, 3' to 6' strata; limestones, fine grained, thin near bottom but become 1' thick near top. 75'. 35) Limestones, medium gray weathering, abundant fusulines, Collection 8/15/57/2 near top. Collection 8/15/57/3 near middle; 28'. Collection 8/15/57/4 near base. This unit becomes more sandy and silty near base, began to get a brownish color. PG. 33 {note: illustration: bed 3: 8/15/57/1 bed 5: 8/15/57/4; 8/15/57/3; 8/15/57/2} I believe bed 4 = P.King's bed 3, section 24; p. 61, and bed 5 is covered portion in King's bed 4. Collection 8/15/57/5 - Hess fm. about 1 mile N5°E of Massive #2 limestone unit overlooking Neal Ranch House, at the site of an abandoned windmill. The lower portion of the Hess is exposed here, this is probably the upper 25' of King 260' covered interval to the west. This is sampled to the NW of old WM site across a fence, (30' NW). PG. 34 see also pg. 58 Collection 8/15/57/6 - float high in the "Gaptank" of King near road 1 mile east of Deccie Ranch. Collection 8/15/57/7 - from upper most limestone-conglomerate bed at same locality as 6 above.
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Collection 8/15/57/8 - granular conglomerate bed which forms nose of anticline at the joint road cross it. About 100' stratigraphically below #7. {note: illustration followed} PG. 35 8/16/57 - Neal Ranch Studied the face of #2 gray limestone member of King. Collection 8/16/57/1 - near base of reef rubble beds west of west reef in main massif. This as a mirror image, the view is really east, {note: illustration: bed 1: Covered bed 2: 10'; coarse rubble bed 3: 8'; 8/16/57/1; irregular bedded fine rubble bed 4: 55' massive; 8/16/57/2 bed 5: 10'; crude bedding but indistinct} 8/16/57/2 - boulder from higher in the reef. 8/16/57/3 - just below notch in #2 limestone mbr. North of Neal Ranch. 3 bags; This collection is from reef talus beds and is really loaded with fusulines (for reef strata). PG. 36 8/16/57/4 - on west flank of east massif on main reef, this was collected about 20' stratigraphically below a brown weathering dolomite bed 7' thick. {note: illustration: 8/16/57/5 Dolomite 8/16/57/4 Notch} This has a fairly rich fusuline fauna. Collection 8/16/57/5 - about 10' above dolomite bed. This has a few fusulines, but several (at least 2) kinds of Ceratitic ammonites. Collection 8/16/57/6 - East side of geologists' canyon above terrva block structure in what is fairly definitely Gaptank if King's maps are right. Collection 8/16/57/7 - shale from Uddenites zone exposed on Terrva block east of Geologists' Canyon. PG. 37 Collection 8/16/57/8- from Uddenites shale interval, east side of Geologists' Canyon, on Terrva Block I believe the actual occurrence of Uddenites is quite low in this zone. Collection 8/16/57/9 - Top bed in terrva block, east side geologists' canyon. Collection 8/16/57/10 - about same stratigraphic position as 8/16/57/9 but is on the thin wedge of #2 limestone member which pinches out on the Gaptank. {note: illustration followed}. PG. 38
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Collection 8/16/57/11 - From 10' interval of limy beds below iron red Uddenites sandstone horizon in 2nd Terrva block east of geologists' canyon. The lower part of the cyclic beds are exposed to the east of geologists' canyon above the #2 limestone member. There seems to be considerable structure (at least for this area) as the #2 beds take a sudden dip beneath the cyclic beds. The shale interval here is a light gray and is slightly silty. 4 to 5 of these cyclic calcareous sands are present. The bulk of the material is a coarse rubble and includes dark gray limestone pebbles 2-3" diameter and has mottled weathery appearance over all. I don't see how all of the structures here can be attributed to draping over buried reefs although that is still within possibility. The explanation of a SW-NE structure trend is appealing. These beds seem to be faulted in the limestone units and flowage in the shales but no definite such structures were observed. PG. 39 8/17/57 (Section 36, Memior 88) Section 29: Moore Ranch; 200 yards east of last Wolfcamp limestone exposure. 1) Covered, probably siltstones and shales, base of unit under alluvium. 2) Sandstone, light green-gray to brownish-gray to brownish-orange, very fine grain quartz for most part; occasional conglomeratic beds. 4'. 3) Limestone, green-gray, fragmental hash, these are in a limy shale matrix and are similar to the #3 bed, section 23. 27'. 4) Covered, 11'. (same as 3 in stream cut but considerable more clay %) 8/17/57/4. 5) Sandstone, weathers orange-brown; fresh is green-gray: very fine to fine grain quartz; 1/5'. 6) Covered, 15'. 7) Calcarudite; light gray to light brown-gray weathering up to 6" cobbles, very small amounts of chert. (8/17/57/1 - pebbles). 15' to top of ridge, this unit forms dip slope here. PG. 40 50 yards west of section 29; in a stream cut a 9' limestone underlies the calcarudite. Thus it seems the calcarudite has been deposited in a eroded surface of the limestone. 6)A. Limestone, light pink; massive weathered surface has a tinge of brownish- orange. 0' to 9'. 8/17/57/3. 6)B. Limestone, light gray, some yellows; calcarenite 6" to 8" beds, Collection 8/17/57/2; 0' to 20'. These 2 units overlie 6) and underlie 7). {note: illustration followed} I think the Calcarudite is wave reworked material, not much transport, the cherts yes, but most of the limestone have probably been reworked nearly in place. Beds 6A and 6B weather into horizontal wavy "bedding" lines; these I have called debris beds off reef highs and I suppose that would hold here too.
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PG. 41 I believe the Hess Conglomerate has been deposited on the lower beds westward to the Brooks Ranch - explains lack of outcrop. The beds above the Hess Calcaredite are shaly and silty for a considerable distance 30'-40' upward. They then began to alternate in some sort of cyclic deposition. {note: illustration: bed 1: 30'+-; red and maroon shale bed 2: 2'; orange very fine sandstone bed 3: 7'; gray shale bed 4: 1'; gray dolarenite (xbeds) bed 5: 8'; gray shale bed 6: 1.5'; orange-brown very fine ss. bed 7: red shales ( and maroon)} The Hess Conglomerate usually has a red shale and pebble zone either in or at its top; in the eastern portion of Moore Ranch - In fact in the middle and western exposure also. The first canyon east of the ranch road through the Wolfcamp fm. has 4 or 5 Hess Conglomerate separated by red shales and buff sandstones. The Hess is about 75' to 80' thick here - The Wolfcamp limestone thickens here and the Gaptank limestone (#?) is well exposed. The dip of the Gaptank and Wolfcamp increases PG. 42 cont. from pg. 41: from about 10°-12° to about 20° for the next 1 mile eastward; this is opposite the anticline in the Penn. and suggest that structure is in part at least post-Pm. (The Hess and Leonard like wise steepen). {note: illustration: See Section 31: limest#3: 30' 300'-350' ?limest#5: 5'-10' 45' 10' 10'; limy shale and siltstone Wolfcamp: 30'; flagy ls and massive +- Hess conglo: 170'; orange ss and red clay; conglo and red clay.} PG. 43 8/18/57 Sect.38 of G.S.A. Memoir Section 30, 1/2 mile east of Moore Ranch road to higher range. Covered below 1) Sandstone, brownish-tan, fine sand size, quartz, calcareous cement, 6" to 8" beds; 5', 8/18/57/1.
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2) Sandstones, orange-brown, medium sand size, quartz, ferrinous and calcareous cement, some shell frags. 8" to 1' beds, 6'. 3) Sandstone, brown-tan, medium sand size, quartz, calcareous cement; Cross- bedding probably current type, 3" to 1' beds, 9'. 4) Covered 12'. 5) Sandstone, orange-brown to tan weathering, 3' beds. 1' exposed, many big pieces of shells. Calcareous and ferrinous cement. Fossil wood! [3']. 6) Covered 8'. 7) Sandstone, brown to orange-brown, well sorted, fine grained; laminar bedding. PG. 44 2"-6" beds; 2'; 8/18/57/2. 8) Shales, green-gray, well bedded, some orange-brown siltstone horizons. 14'. 9) Siltstones; orange-brown, 3" beds; contains many fine shell frags, a 3" red sandstone, 8/18/57/3. 10) Shale, green-gray; with some siltstone and very fine sandstones, 47'. 11) Calcaremites; mostly organic fragmented, yellowish to orangish-brown; 4" to 6" beds, 2.5', 8/18/57/4. Green shale mud balls, up to 2" diameter. 12) Shale, green-gray, 15'. 13) Covered, 17'. 14) Like 12, 28'; siltstones, ferrinous, 2" occasionally, 8/18/57/8. 15) Covered; 41'. PG. 45 16) Shale and silt-sandstones, green shales, brown weathering silt-sandstone (very fine grain ss) ferrinous cement. 4" to 6" orange-brown weathering (gray) limestone (calcarenite), 1/16" to 1/8" laminellar bedding at top. 8/18/57/7. [? 15' thick?]. 17) Shale, green-gray, fairly silty. 5'. 18) Covered, 94'. 19) Shale, gray to green; some ferrinous 1" silty zone. 24', Collection 8/18/57/6. 20) Limestone, dark gray, contains pebbles of clay, and crinoid stem frags; lenticular, 0" to 8" beds with green-yellow shale and siltstone between. 5'. 21) Limestone, dark gray, massive, 21', upper part is limestone conglomerate and organic frag. 8/18/57/5. (This can be walked out to King #5 limestone of the Gaptank). ?? 22) Covered, 105' lower 10' are green-gray shale. PG. 46 23) Sandstone; very fine to fine sand size, calcareous cement; tan to brown weathering; 6" to 1' beds; well sorted, cross-bedding near top; 18'. 24) Limestone, light gray, massive, 6' to 6" beds; 52'. {note: illustion: bed 24: covered 12'; 8/18/57/11 bed 25: 52'; 8/18/57/9} top of unit has pink matrix like 6A of section 29. Collection 8/18/57/9, Collection 8/18/57/11.
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25) Covered, 12'. 26) Limestone; light gray to tan on fresh surface: Has nodular weathering with laminate orange coating and MnO2 dendritic patterns. 3'? poorly exposed. 8/18/57/10. 27) Covered, 16'. 28) Calcarudite, "Hess Conglomerate"; has up to 6" cobbles of limestone, very small amount (5% or less) chert. 2' to 4' beds, PG. 47 shale partings as much as 6" to 1' thick. The Gaptank #5 limestone thins to the west and becomes laminitic and very sandy, finally grading into an orange or red weathering sandstone. Beds 1,2 and 3 are equivalent (see pg. 140-141?) to limestone #3 of the Gaptank fm. and the #4 limestone if present here is not recognizable. PG. 48 8/19/57 (Sect. 39 in G.S.A. Memoir) Section 31, 300 yards east of section 30, dip NNW 25°. 1) Limestone, dark gray, organic fragmental, massive 6" to 4' beds, thin ones near top 12'. (#5 limestone of King's Gaptank). 2) Covered, 13'. 3) Limestone, light orange to yellow-brown weathering; high in clay (marlstone?); dominantly shell hash. Very rich in fusulines. 3" to 6" bedding, uneven; Collection 8/19/57/1. 2'. 4) Shale, green-gray (some bluish horizons), badly covered; 21' (8/19/57/4). 5) Sandstone, light greenish to orangish-brown; 1/2" to 4" beds; brown speckly spots. Uneven bedding; 8'. 6) Shale, brown, high in silt and very fine sand sizes: This unit thickens and thins along outcrop; in valleys it is thicker and pinches out on side of hills; [0-7']. PG. 49 Unit 5 is bent and is truncated along with unit 6 by unit 7. The pre-7 structure this suggests the dip of the pre-7 beds was steeper and that they were warped prior to 7 time. The beds were subjected to erosion fr some sort before 7. Top of Uddenites? or Gaptank 7) Limestone, medium to light gray; wavy beds 6" to 10" thick, many shale breaks in lower 3', upper part is massive. Shell fragments dominate this rock. 18'. 8) Limestone, medium gray, 6" to 1' beds, high in sand (quartz and dolosand) and silt (about 30%) more easily weathered than 7 or 9. 12'. 9) Limestone, massive, medium to light gray, shell frags. 1' to 6' beds, 21', brown spotty patches of Dolomite, 8/19/57/2. {Note: (7,8,9) could they be Wolfcamp?} 10) Shale, poorly exposed, dark gray, only local 0-2'. 11) Calcarudite, 2"-3" pebbles; 4'.
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PG. 50 100 yards to the east the 8,9 and most of the 7 beds are gouged out and a chert-quartzite conglomerate fills a 40 to 45' depth channel. I take this to be an old river channel. It has the appearance of the typical Wolfcamp conglomerate of the western part of the basin. This channel is about 130 yards wide in outcrop. 12) Dolostone, brown weathering, 6" to 1' beds, locality the beds are unaltered limestone. 36', 8/19/57/3. 13) Sandstone; light brown to tan weathering, zones of chert and quartzite conglomerate pebbles. 3" to 1' beds, 6'. 14) Conglomerate; 8" boulder, beds are very anticular with sandstone lenses 0-1'; mostly chert and quartzite near base, becomes limestone near top: 16'; this is like conglomerate in stream channel; little or no limestone for most part. 15) Covered, 15' red soil. PG. 51 16) Conglomerate; mostly dark gray limestone pebbles, some chert and quartzite pebbles; Sandy and clay matrix is red. (mostly a pebble conglomerate) 2'. 17) Covered, 18', red soil. 18) Calcarudite, light gray weathering, 2' to 8' beds, 36', 12" cobbles. 19) Covered, red soil, 12'. 20) Calcarudite; 8', 10" cobbles, light to medium gray weathering. Top of Hess basal Conglomerate Unit I would draw the top of the Wolfcamp (basal on lithology) at the top of the dolostone unit, and the base of the Wolfcamp at the base of Unit 7. The 2' conglomerate (#11) is hard to explain but it seemed to have only limestone of the 7,8,9 types in it. The rest of the conglomerates had a great deal of cherts. {note: illustration followed} PG. 52 8/20/57 (37) Section 32, west side of Canyon (Road to high pastures) dip NNW 23°. Covered below. 1) Limestone, dark gray with layer and irregular patches of orange-brown sandstone. Brach shell frags. 1' to 2' beds; 14'. 8/20/57/1. (=#5 limestone in Gaptank of King)? 2) Covered, 37': mostly greenish-gray shale. Collection 8/20/57/9. 3) Sandstone, orange-brown weathering; 8" to 1' thick; well-sorted, very fine to fine sand sizes. Well cemented (Fe2O3 and Silica?); 1'. 4) Covered, 52', a few feet of shale poorly exposed at base. 5) Calcarudite, dark limestone cobbles up to 4" in diameter, Reddish to orangish-brown sand matrix well-cemented; at least 4' thick, base is covered under #4. 8/20/57/2. Many fusulines in matrix.
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6) Shale, green to gray, 0'-2' very lenticular. 7) Limestone; dark gray, shell hash, fusulines common in thinner beds (3"-6") near base; brachs and crinoids common in upper part; 11', (8/20/57/3). PG. 53 {note: illustration: bed 1: 8/20/57/1 bed 2: 8/20/57/9 bed 5: 8/20/57/2 bed 7: 8/20/57/3 bed 9: 8/20/57/4; 8/20/57/5 bed 10: 8/20/57/6} 8) Covered, 88', probably mostly shale and thin beds of limestone in lower 10'. #9 bed has slumped down to cover this interval, variable in thickness and lithology. 9) Limestone, very light gray to nearly white; organic fragmental; many brachiopod shells and crinoid stems; some fusulines: Collection 8/20/57/4 near base; Massive beds, irregular weathering lines sub parallel to bedding 5' to 10' beds; 43'; Collection 8/20/57/5 in top bed. 10) Calcarenite, light yellowish-gray; very silty near base, becomes v.c. sand size at top; 11', cross-bedding, poorly sorted; looks like stream deposition rather than wave action. Collection 8/20/57/6. PG. 54 {note: illustration: bed 11: 8/20/57/7 bed 12: 8/20/57/8} 11) Limestone, medium gray; very fine grained, has orange-brown patches, probably local dolostone. Small crinoid stems and fusulines are about only fossils. Collection 8/20/57/7; 3" beds. 18' to top of ridge. 12) Limestone, yellowish-gray weathering; organic fragmental; brach shell, crinoids and fusulines. Total 6'; Collection 8/20/57/8; beds 8" to 1'. This bed forms dip slope to valley. 13) "Hess" "Conglomerate". See pages 124-126. PG. 55 {note: illustration followed} PG. 56 (35) Section 33, 100 yards east of prominent knob east of Brook's Ranch House: In creek bed.
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{note: illustration: covered below bed 1: friable ss, with much greenish fines. 12'. bed 2: 2 pictures; dark orange-brown ss, very hard, 14' (x-beds) bed 3: orange and gray sandstones, one or two resistant beds, 30'. bed 4: orange-red weathering sandstone; 3'. bed 5: gray clay or shale; 10'. bed 6: 8/20/57/12; limestone, uneven beds, 3"-6" much clay; 18'. bed 7: 8/20/57/11; limestones and marls, 3" beds, very silt an clay rich at base; 47'. bed 8: green shale and limy sand and siltstones, crinoid stems; 18'. bed 9: very fossiliferous marl(green) 15'. bed 10: 8/20/57/10; limestone, fusulinid; 2'.} PG. 57 Further to the east the calcarudite rests on older and older beds apparently. Within a mile (see Section 29) to the east, this (erosion removal in pre-Hess time) calcarudite began working its way higher in section, but still large valleys are apparent in the Wolfcamp? Reef. Gaptank looses shales and grades into what might be referred to as an Uddenite zone based on colors. Orange-brown ss are cross-bedded. Beds 14 of Sect.33, is probably equivalent to bed 9 of Sect.32, but might be as old as Sect.32 bed 7 but doubtful. Beds 8 through 10 of Sect.33 probably represent covered interval of Sect.32. Bed 7 might be included in this grouping also. PG. 58 see also pg. 34 (4 miles +/- west of Marathon on U.S. byway) 8/20/57 cont'd. Afternoon, see page 34. Section measured up east flank of anticline beginning 150 yards SSE of Windmill, 1.5 miles on U.S. 90 east of Decie Ranch House. 1) Sandstone, medium grained, iron stained. 1/2" to 2" beds with interbedded shales. 40'. 2) Sandstone; very coarse to coarse grained, 6" to 8" beds; with interbedded shales. 24'. 3) Conglomerate; fine to medium pebbles, up to 1" diameter; orange-brown weathering; 2'. 4) Shale and siltstones, poorly exposed, 25'. [5] (6) Conglomerate; rich in lime pebbles, a little gray for that reason; boulders up to 1' in diameter. Matrix looks like reworked limestone; 4'. [6] (7) Covered, 100', mostly sandstones and shales in thin beds. 8/20/57/13, a piece of float from thin interval.
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PG. 59 [apparently skipped number so there is no 7 here.] 8) Sandstone (and Conglomerate locality); contains many shell fragments, light to medium orangish-brown. Collection 8/20/57/14; 7'. 9) Sandstone, (Calcarenite with ferrinous and silica replacement?) many shell frags; and shale, poorly exposed; 55'. 10) Sandstone, yellowish-tan, silicified fossils and band of darker silicification. Conglomeratic to about 25%. 3'; 8/20/57/15. 11) Covered, 15'. 12) Sandstone, tan, coarse to very coarse; much lime in form of shell frags. 8". 13) Covered, 35'; several very coarse sandstones, and a poorly consolidated conglomerate near top. 14) Limestone, most is shell hash; yellow-tan weathering; chert and quartzite pebbles. Up to about 40%. Two units - 8'. 8/20/57/16. PG. 60 15) Covered, 70'. 16) Sandstones, orthoquartzites, in 3" to 5" beds, light brown with darker iron stains; well sorted, very fine laminellar bedding. (Old beach?) 270', of this, the upper 200' are badly covered, but the float indicates the same general type of lithology. Many shale intervals are probably thus, covered. 17) Sandstone; orange-brown very conglomeratic (granular) 30%; a few shell frags. 1'. 18) Covered, 62'. 19) Sandstones, deeply iron stained, 3" to 6" and shales, 1'-2'; grayish; 46'. 20) Sandstone, light brown to medium brown, a few conglomerate pebbles up to 2" diameter. 6" beds. Collection 8/20/57/17. Shale, 1' to 3' between. 20'. Top of exposure near RR abutment PG. 61 Section 34 is extremely incomplete section of P.King's western Gaptank facies. The 1957 Spring field trip of the Prm. Basin claims there have been Wolfcampian fusulines found in these sequences but gives no localities. Darn their hides!! So far I've just been able to stab in the dark. PG. 62 8/21/57 Sect.35 Leonard Mt. SW side {note: illustration: 7/23/58/1; 200' Gaptank: 7/23/58/2; 150' bed 4: 8/21/57/1 bed 5: 8/21/57/2 bed 6: 8/21/57/3 bed 8: +- covered; 8/21/57/4 BM: 5860}
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(attached paper: CR's Section 12 (=35) here is due South of Peak on Leonard Mt. - Unit 12 - 15 is Missourian (or Desmoinesian Shale) in Gaptank. Estimated 200'. [I don't show any collection from it]. Unit 12-15 is Lenox Hills shale-siltstone with fusulinids in only 1'. May need to locate the sample bag with "12-5" on it and see if it has a date/sample number on it also - "40-50' above base" could be bed 12-16 (8/21/57/4 - 45' up) a 55' unit with mostly biohermal bedding.) (attached paper: added to base of section 35. Section 35 9 0 — covered - 20' 8 00 — 30' Calcarenite, medium gray-brown weathering, massive medium to coarse sand size - 30'. 7 000 — covered - 80'-150'. 6 000—Limestone, medium gray, organic fragmental, 5' beds, dip 24°S80°E, Collection 7/23/58/2, Collection 8/24/57/1 - 15'. 5 0000—Covered for most part, includes light brown sandstones and green-brown silty zones (Haymond) in a folded and faulted sequence - estimated 200'. 4 00000—Limestone, orange-brown weathering, on knoll. SSW of Summit of Leonard Mt., Collection 8/24/57/2, Coll. 7/23/58/1, Coll. 8/2/58/1,Upper Desmoinesian- 4'. 3 0^6 —Sandstone, orange-brown, silty, with interbedded light gray shale, 3" to 2' beds.- at least 100'. 2 0^7 —Chert, dark brown, to black, 3" to 6" beds with thin shale interbeds 60-70'. 1 0^8 —Limestone, dark gray, mostly calcarenite, 6" to 2' beds, with thin shale partings brown chert bands near top of most limestone beds. 150' or more.) PG. 63 10 1) Calcarudite, some chert (up to 20%) brownish-gray to tan weathering; 220' massive. 11 2) Covered interval, 50'. 12 3) Calcarudite, up to 20% chert, brownish-gray to tan weathering; 75'; massive lower part, 2' to 4' beds in upper 15'. 13 4) Calcarenite, orange-brown: fusulines and crinoid fragments are rare; base of unit is gradational with #3 below for 4'; total thickness 5' to 60'+. 8/21/57/1. {note: illustration followed} 14 5) Limestone, medium gray massive to 6" beds varying locally a few chert pebbles near base. 8/21/57/2 - 35' above base. 45'. 15 6) Shale, 1', mostly covered, 8/21/57/3. (note at top of page: #10-13; =basal Lenox Hills Fm conglo - seems to be a valley fill of fluvial gravels here and to the east.)
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PG. 64 16 7) Limestone, medium gray, very massive locally, but in 6" to 2' beds; many fusulines, highly inflated forms; Collection 8/21/57/4 - 45' up. Total 55'. 17 8) Covered, 30', mostly limestone; a few shale parting (1"). Unit 7-8 is unconformably over lain by unit 9. 18 9) Dolostone, medium-brown, slightly orangish in fresher blacks. 120'+. This once had limestone conglomerates and a rich fauna in it. 19 10) Limestone, medium to dark gray, 15'-20' massive beds, silicified fossils; 30' to U.S.G.S. BM. 8/21/57/5. (note at bottom of page: 1998 - I would now consider this basal Leonardian = to Lower part of Hess Limestone. Fossil includes reworked Lenox Hill age fusulinoids.) PG. 65 Collection 8/21/57/6 - SE slope of Leonard Mt. This is float between 2 conglomerate layers. I believe this is near the top of the tervra-block of C.O.D. (This may be in place at base of lower conglomerate interval). Section 36, about 1 mile SW of Hess Ranch following up an east-west fence. {note: illustration: bed 1: 9', sill bed 2: 7/23/58/6; This is jumbled up and it seems to be flexed due to the intrusive. (Calcarenite to N.); 1-3" sandstones, deeper iron stains along joints. bed 3: 8/21/57/8; 35'-40'; 8/21/57/7; Limestone, organic frag, yellow-weathering, gray limestone pebbles unit. Rest is shale, gray, with a 4' marl near middle. bed 4: 8/21/57/9; 20'; black limestone, orange cement, 4" to 1' beds, interbed with shales, gray. 7/23/58/7. bed 5: Calcarenite, 25'; dark gray with orange sand matrix.} PG. 66 8/22/57 - (Mr. Dillinger, Forest Oil Co. visited). 8/22/57/1 - from Hess Conglomerate, near Gaptank area - Pebble is in lower unit of conglomerate series; north of the point Highway passes through #5 Gaptank Limestone. 8/22/57/2 - Barite from Morrin claim, 45-50 miles south of Marathon, Tex. The implication of a large local high extending nearly E-W across the Montgomery Ranch just north of the Ranch House and extending into the canyon 1.5 to 2 miles WSW from Brooks Ranch House. The thinning of the clastic interval in the Wolfcamp and the gradual increasing dip of older rock on the Moore Ranch suggest this was an active high during upper Gaptank time through Wolfcamp time. It seems to have had little effect on the Hess or Post Hess sediments. The Gaptank limestone gradually changes to a sandy facies over this high.
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PG. 67 8/23/57 Section 37 - 1/2 mile NE of Hess Ranch House - level shots - dip 10°. 1) Igneous intrusion, it is really a syenite dike. 2) Covered, 5'. 3) Calcarudite, 8" to 12" boulders, quartzite and chert pebbles up to 1" diameter, orange-brown sand matrix 4' beds; 25'. 4) Covered, 35', probably conglomerate like #3. 5) Calcarudite; pebbles and cobbles of limestone, well rounded, light yellow sand matrix. Some chert and quartzite (up to 25%). 8/23/57/1 at base; 8/23/57/2 40' up. Total - 49'. 6) Limestone, calcarenite, some limestone pebbles, but most pebbles are 1/2" chert. This is gradational with 5 below in the last 15' of that (#5) unit. This unit (#6) becomes progressively less conglomeratic upwards, 1'-3' beds. 8/23/57/3; 11' above base. 8/23/57/4; 32' above base. Total - 32'. PG. 68 7) Calcarenite, brown-gray weathering, 2" to 3' beds, little chert pebbles. 22'. 8/23/57/5 near top. 8) Covered, 7'. 9) Dolostone; dark to medium gray, slightly brownish, 1'-4' beds, replaced fossils but they lack internal structures. 115'. [continued page 104] {note: illustration followed} [37-9 = 38-5] PG. 69 Section 38; N25W up slope behind Hess Ranch, level bunton traverse. [dip about 15°N]. covered below 1) Calcarudite, with yellowish-brown sand matrix, some pebbles of chert 1" diameter; most limestone cobbles 4"-6" diameter. 65'. 2) Calcarenite, medium gray, coarse sand size, 4" to 8" beds; 8/23/57/6 at base. Many beds of fusulinid limestone. 8/23/57/7 at 16'. Total 38'. 3) Conglomerate, chert pebbles 1/2" diameter average 3'; probably a lense in #2 lithology. 8/23/57/8. 4) Like #2, 16'. 8/23/57/9 near top. 5) Dolostone, 14'; top or ridge - dark gray, 1'-2' beds, {note: illustration followed}. PG. 70 8/24/57 8/24/57/1 - South side Leonard Mt., 100'-150' below massive calcaredite in a probable terva block. The beds are dipping to east about 12°-15°. - [Gaptank in place] see 7/23/58/2.
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The low hills south of Leonard Mt. are folded and faulted rocks of the lithology of the "Dugout Mt." series. They are orange-brown sandstone, dark silicified limestone (clastic limestone) and "marls" (very fossiliferous silty clayey zones). Collection 8/24/57/2 is from one of the fossiliferous "marls". (2 bags). The fusulines look like Upper Wolfcamp or Hess ones. This could be terrva block or a fault block. See aerial photos SW corner of Hess property. [Fusulina sp; Desmoines Age]. I frankly don't know what formation the silicified dark limestone represents; it is like those beds Conoly Brooks showed me at the SW corner of his W pasture. I believe the rocks are badly faulted and folded and are part of the large thrust sheet picture. PG. 71 The lower conglomeratic contains rocks of the lithologies which are underlying the areas south of Leonard Mt. The upper conglomeratic is a calcarudite and seems to represent erosion of past lower conglomeratic limestones. Here the history seems to be: 1) Thrusting and folding lifting area above sea; 2) erosion and deposition of chert and quartzite (et al) conglomeratic; 3) Milder folding and uplift. This seems to be after a period of quiet times, deposition of limestone and orange sandstones (see Coll. 8/24/57/1). 4) Deposition of Calcarudite. 5) Gradual subsidence as indicated by Hess-Leonard beds upward. PG. 72 8/26/57 Hess Canyon Horst. Level compass: up a stream gully - Sect.39a. 1) Igneous intrusive; [Syenite] Rhyolitic? (8/26/57/1) 1 2) Metamorphosed shales and limestones, varying dips as a result of intrusion of #1 below 10'. 2 3) Limestone, slightly metamorphosed but with fusulines, very fetid even if it is metamorphosed; 1'; 8/26/57/2; has mud blebs, crinoid stems, productid brachs. 3 4) Covered, 8', mostly shale probably 9/1/58/5. 4 5) Shale, blue-gray, wood fragments, slightly metamorphosed; 8'; 8/26/57/3. [did not breakdown, thrown out]. 5 6) Shale, brown, fairly silty; with 3"-6" calcarenite zones. 3'. 8/26/57/4 - calcarenite zone at base. The beds here are in a little syncline and they come up higher in the stream gully. PG. 73 Sect.39b, east 50 yards, across a fault in which 75' of section is removed (fault isn't there). This removed interval is covered on West side of fault. [ 7) Covered, 75' probably like #6.]
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6 8) Calcarudite, 80', light gray to light tan weathering; very fine chert pebbles, medium to large limestone pebbles. Massive, 8' to 10' beds. 8/26/57/5 center 10' covered. 7 9) Limestone, gray (dark); sandy; 2', very fine sand to fine sand size; fusulines look like Hess or Leonard types; <-- (?) 8/26/57/6. 8 10) Sandstone, grayish-brown, well sorted fine to very fine sand size; 6" to 3' beds. 16'. 9 11) Calcarenite, 1'; dark gray, 8/26/57/7. 10 12) Covered, 23' most shaly sandstone similar to #10. 11 13) Conglomerate; very fine chert pebbles, matrix limestone with crinoid fragments. 2'. PG. 74 12 14) Calcarudite, gray to dark gray limestone pebbles; some as large as 8" to 10" diameter; little chert material except as sand-size particles 20'. 13 15) Conglomerate, brown weathering, locally the chert and quartzite dominates over limestone pebbles. The change from 12 to 13 is rather abrupt here even for conglomeratic lense. Massive; 28' in 4' to 6' beds. 14 16) Like #12; here again % chert;limestone is quite abrupt. 19'. 15 17) Like #13, but in 2' to 3' beds, more sandstone lenses (50% of unit). 18', upper is a gray quartz sandstone with about 10% chert pebbles. 8/26/57/8. 16 18) Conglomerate; very fine chert pebbles, matrix limestone with crinoid fragments. 2'. PG. 75 {note: illustration: bed 17: 8/26/57/8. bed 19: 8/26/57/9} 17 19) Dolostone, brownish-gray, 6" to 1' beds, sandy to silty throughout. Once had a rich fauna but have been replaced by dolomite. 40', some chert pebbles 1/4" to 1/2" diameter. 18 20) Limestone, some what altered, dark gray to light gray. 2' beds. 8/26/57/9. PG. 76 8/26/57/10 - near top of King Massive limestone unit at east end of Hess Horst. This bed is equivalent stratigraphically to bed 7 of section 39b. In the middle of this Horst there is a grauben dropped (11NE-SW) and Sect.39b was measured up the section in the grauben, King measured his section east of the grauben and apparently based the Wolfcamp fm. to the west on the lithology change on this part of the Glass Mt. PG. 77 8/27/57 Hess Canyon
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(not entirely so!) The fault at the east side of the Horst continues to the south (and a little west) and probably causes the structural control on a valley there. It is probably this fault or the monocline flexture resulting from this fault that lowers the west end of the Wolfcamp fm. at the WCHs to a place under the Alluvium. The 2 main hills of the Horst seem to be separated by a fault although this may be an optical illusion on any part. The western hill is covered with Pinyon Pine and has more conglomerate apparently than the eastern hill. There however is what I take to be the top of the Wolfcamp fm. a considerable thickness of limestones and shales? (covered intervals) and this "non"clastic interval thins appreciably to the west along the western hill. The system of faults related to the intrusives seems to be quite complex. The intrusion in Hess Canyon is connected +- by sills, dikes and linearly scattered igneous bodies to the Iron Mt. Intrusion. One system of faults parallels this trend of igneous intrusions and the other. PG. 78 Fault system more or less parallels the south front of Hess Horst. 8/27/57/1 - 2 bags from dark gray limestone near windgap on crust of ridge just west of highest point in west hill of the Hess Horst. To the west the unit from which collection 8/27/57/1 was taken, forms the top of the Hill and becomes a dolostone. This seems to be the same dark gray dolostones as caps section 38, p. 69. 8/27/57/2 - silicified zone in same dark gray limestone, 100 yards west of collection 8/27/57/1. 8/27/57/3 - (not numbered) Calcarudite from west hill in Hess Horst. PG. 79 {note: illustration: W (active) | (stable) E near shore basin near shore marginal area calcarudite facies calcarudite and fine clastic facies} PG. 80 Received from C.O.Dunbar a number of samples and measured section - 2 samples not shown on the sections are: 7-5-2 from the double ledge forming limestone behind the Wolfcamp Hills and 7-5-3 from about 150' above this ledge. These samples came from localities just east of the 3 faults in the Hess visible from the east end of the Wolfcamp Hills. PG. 81
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July 20, 1958 Collection in N.C. Texas Wichita gap near Coleman and Santa Anna, Texas. Collection 7/20/58/1 - 2.5 miles east of first crossroad east of Santa Anna - This is Saddle Creek mbr. Collection 7/20/58/2 - _?_ SE of crossroad in Camp Colorado limestone mbr. - purple limestone. 7/20/58/3 - along secondary road SE of previous collection in Stockwether limestone mbr. - no fusulines. This was a silty red-purple nodular limestone with many brachs, bryozoans, echinoid spines, and crinoid calcimuals. The lower part is a pelcypod cocinna with some gravel. 7/20/58/4 - about middle of Waldig sh mbr. - abundant fusulines - fine calcarenite - reddish purple color. 7/20/58/5 - 50 yards west of creek on secondary road at junction to farm road up hill. Fine grained calcarenite light gray to medium gray. PG. 82 7/20/58/6 - Roadside park roadcut, about 4 miles SE of Coleman, Texas. Coleman junction limestone. no fusulines but many "Rhynchonella" brachs. and one Productidea. 7/20/58/7 - Overall limestone mbr. 3/4 mile SE. Coleman on bypass U.S.67 - bryozoans. PG. 83 7/22/58 Gaptank area The lower Gaptank along the old F. Stockton Road has several limestone beds in it. [Upper Haymond (limestone and sh mbr.) This is locality #1]. Section 40 {note: illustration: S ---> N (1) Dip 32° NW Dip 80°S bed 1: Haymond bed 2: C. 15' bed 3: Limestone, 7' gray rugose coral bed 4: C. 10' bed 5: 15', rugose and Chaetetes; light brown limestone, C. 3', bed 5b. bed 6: 7/22/58/1; fusulines bed 7: Brown ss, 2'. bed 8: Covered, 100' bed 9: Brown ss, cover 30'. (2) Dip 80°N bed 10: Calcarudite, medium gray cross bedded at top. bed 11: 7/22/58/2; grades to siltstone and limestone; cover 40'.
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bed 12: 10'; coarse calcarudite.} PG. 84 Walked beds eastward - (2 interval) - small fault with 20-30 horizontal displacement marked on map. Conglomerate (2 is circled here) cuts into the lower limestone beds in the section as it is traced eastward. Not much change in thickness but the lower limestone sequence is folded slightly beneath the conglomerate beds and suggest pre- conglomerate warying. The conglomerate beds thicken and thin nearly 8-50' and are resting on an erosion surface on the lower limestone. (2' to 3'). King's #5 conglomerate is probably a limestone - 5 conglomerates are apparent in the slope behind the first ones - The valley about 1/2 mile SE of Gaptank has about 220' of Hess facies - This is all cross bedded gray sandstone and siltstone (picture) beds are rather massive (5' +-) with interbedded red and gray shaly siltstone. Overlain by K. PG. 85 7/23/58 (bottom = Sect. 12) SW face Leonard Mt. Collection 7/23/58/1 is from small outcrop (rather local) about 40 yards WSW of collection 8/24/57/2 on SW side of Leonard Mt. Picture of section 35 - from locality 8/24/57/2. Collection 7/23/58/2 - east dipping limestone about 1/4 way up SW face Leonard Mt. - 50 yards down dip from up end of outcrop. (about same interval as 8/24/57/1). {note: illustration: Dip 24° S80°E 5' medium gray limestone 7/23/58/2; 1' 5' medium gray limestone 6" 5' medium gray limestone} PG. 86 The dolomite member on Leonard Mt. apparently is the same as the dolomite behind Hess Ranch. The Leonard Mt. section is repeated by a fault just west of 1st ridge, this fault apparently bends around the Hess Horst on the NW. 7/23/58/3 - Brach and Fusuline horizon, top of northern-eastern most knob on Leonard Mt. (upper 3' of knob). 7/23/58/4 - about 50' below (3) in saddle to south of knoll. 7/23/58/5 - Collection from upper portion of Gaptank beds SE face of Leonard Mt. - This is about 300 yards SW of section 36. June Phillips collected from lower portion of Section 36 (see page 65) Collection 7/23/58/6. 7/23/58/7 - (see page 65) upper portion of Gaptank SE flank Leonard Mt.
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PG. 87 The folded and faulted rocks at the base of the SW face of Leonard Mt. have this sequence roughly. {note: illustration: bed 1: Limestone, dark gray, in beds 6" to 2' with thin shaly partings. Calcaremites apparently - brown chert bands near top of most beds. 150' or more. bed 2: Dark brown to black chert, 3" to 6" beds with thin shale interbeds. 60-70'. bed 3: 3"-2'- orange-brown silty sandstones with interbedded light gray shale at least 100' total.} None of these beds have fossils, except for locality at 8/24/57/2 (and 7/23/58/1). This one locality is a thin 2' zone with fusulines and brachs and corals and is only found in this one locality. This overlies the upper unit shown above, but has about 10' of similar orange-brown sandstones above, but perhaps faulted. The lithology of the lower unit is similar to the Ordovician just south of Marathon, the chert is similar in color to the Maravillas, but the upper orange-brown interval is similar to some beds on the eastern side of Leonard mountain in the "Tenus". PG. 88 The "Tenus" as map by King on the eastern face of Leonard Mt. is generally light and gray sandstone in most of its exposures. 300 yards SW of Sec. 36, the Tensus section is exposed in an anticline. The core of the anticline has orange-brown sandstone and interbedded light gray shales similar to the upper sequence on the southwest face. The similarities of this lithology suggests a correlation but is not based on fossils. The lower conglomerate on Leonard Mt. is primarily dark gray cobbles (like unit at base p. 87) and chert and metamorphic pebbles. The upper conglomerate is entirely light to medium gray limestone cobbles, and a minor amount of chert pebbles in infrequent bands. Collection 7/23/58/3 from the limestone interval above the second conglomerate but below the Dolomite mass. The second saddle South of this collection is filled by a syenite (?) dike which apparently follows a fault of perhaps 75-100' of displacement lowering the north side. PG. 89 7/24/58 Sect. 41 - east Hess Horst at eastern most tip of Intrusive (Dacite). 1) Intrusive - 2) Shale, medium gray in 2' intervals and 3"-6" silty? resistant beds (brown weathering) - all badly metamorphosed - 78'. Some plant frags - Walchea? 3) Calcarudite, massive, 4" to 6" cobbles of dark gray limestone and light gray limestone, black chert pebbles 3'. 4) Shale, medium gray, badly metamorphosed 23'.
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5) Calcarudite, medium to light gray limestone cobbles, 3"+-; fine chert (black) and medium quartzite brown pebbles 56', (3' beds). 6) Calcarudite, with interbedded shale. The conglomerate is fine pebbles, crinoid columnals common, shale badly covered, 4 or 5 conglos. 14.2' thick; total 51'. PG. 90 7) Calcarudite, medium to light gray cobbles, 3" to 5" fine pebble chert., 4' to 6' beds; 91'. 8) Covered 75'. 9) Conglomerate, 60-80% fine well sorted chert and quartzite pebbles (1/2"), 1' to 3' beds, 38'. 10) Sandstone dolomite, light gray, 3" to 1' beds, greenish and brown chert pebbles. Interval somewhat covered, 24'. 7/24/58/1 fusulines 2 bag. 11) Conglomerate, chert (browns, black) Quartzite (brown) and various shades of limestone make up the cobbles, fine pebbles are primarily chert. 5'. 12) Sandstone dolostone, light gray 3" to 6" beds a few chert pebbles. 13'. 13) Conglomerate like #11, 1' to 3' beds. 19'. 14) Covered for most part, with a few sandstones (dolomitized calcarenites?) PG. 91 exposures. Collection 7/24/58/2 at 67' above base of unit. Total 112'. 15) Limestone, light gray, locally a fusulinid coquina, or calcarenite, 2' or 3' beds. Collection 7/24/58/3. 7'. 16) Covered, 30'. 17) Limestones, light gray, finely dolomitic beds 1' to 2'. The upper 50' are dark dolomitized limestone, fusulines outline in pits. 3" diameter ammonites (Perrinites sp.?). Total 71' to top of peak. Collection 7/24/58/4 from anti hill near top of ridge at far east end of Hess Horst about 400 yards east of Sect. 41, this is just above dolomite sequence, 10'. 7/24/58/5 about 9' above dolomite. Collection 7/24/58/6 about 50 yards east of #5 [7/24/58/5] about 30' higher in section above other 20' dolomite; from anthill. PG. 92 {note: illustration: bed 18: 7/24/58/4 & 7/24/58/5 bed 20: 7/24/58/6} 7/24/58/7 - from middle of Word #1 limestone (anthill) along west side of Hess Canyon about 1 mile north of split in road. (Hess Horst - Willis Ranch Roads). 7/24/58/8 - top of Word #1 limestone at locality above. 7/24/58/9 - 60' above Word #1 limestone at locality above.
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7/24/58/10 - Creek bed - Word fm between third and fourth limestone 5 +- miles NNE along road to Hess Canyon. 7/24/58/11 - #4 limestone Word fm at head of "Hess" Canyon on King's Map (at L4). PG. 93 7/24/58/12 - Vidrio fm, silicified brachs (not fusulinids, however), a few hundred yards down "Hess" Canyon. PG. 94 7/25/58 Hess Ranch near eastern side (see photo). Lower portion of Hess mbr is dolostone with one fossiliferous limestone near base of exposed section - Unconformity at top of dolostones a foot or so relief-fossiliferous limestone above. Collection 7/25/58/1 - 7' above the unconformity between beds 3 and 4 of King's section 23. Collection 7/25/58/2 - ledge of lower Hess mbr forms prominent sets of "levels" about 1/3 to 1/2 up slope. Anthill. Bed 5, King's Sec. 23. Collection 7/25/58/3 - a second break in slope about 150' to 200' about Coll. 2. Anthill. Bed 7, King's Sect. 23. Collection 7/25/58/4 - about 60' above collection 3; at a small stone carn (limestone full of fusulines) Bed 8, King's Sect. 23. Collection 7/25/58/5 - Anthill just below sponge reef in upper Hess mbr of King's Sect. 23. Bed 13, King's Sect. 23. Collection 7/25/58/6 - Anthill above first ledge of Sponge reef - This is near top of Leonard fm. several beds of silicified limestone above, forms dip slope to lower Word escapement. Bed 13, King's Sect. 23. PG. 95 7/25/58/7 - Anthill about same horizon as (7/25/58/2) perhaps 10' below, 1/4 mile west along Leonard escapement. Bed 5, King's Sec. 23. 7/25/58/8 - from isolated outcrop. 3/4 mile NW of Hess Ranch House. The lower 50 or 60 feet are dolostones with a few relic fossils impressions. The upper 30 feet are silicified thin limestones with some zones of unaltered limestone - contains bryozoans and crinoid columnals. PG. 96 7/26/58 Decie Ranch 7/26/58/1 (= 7/31/57/1) - bed 12 of Sec. 20 brachs and fusulines. 7/26/58/2 (= 7/31/57/3) - Sec. 20, bed 15. 7/26/58/3 (= 7/31/57/4) - Sec. 20, bed 17. 7/26/58/4 - Section 20, bed 22,23,24 - The fusulines look similar from all of these beds in field - mostly the free specimens are from the shale break or lower calcarudite - hand sample from upper part. Bryozoans common in upper 1'.
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7/26/58/5 (= 7/31/57/9) - bed 27, Sec. 20. 7/26/58/6 (= 7/31/57/7) - bed 37, Sec. 20. 7/26/58/7 - Sec. 20, bed 42. 7/26/58/8 - Above base of King's first limestone of Leonard (above Sect. 20) about 25' in silicified banded limestone. PG. 97 7/26/58/9 - Fusulines and bryozoa from brown-orange calcarenite 50 yards SW of WindMill and steel tank 1 3/4 miles north of Decie Ranch. (1/3 mile west Popular Tank). These beds badly faulted and folded. Triticites? 7/26/58/10 - Ammonite Zone. Perrinites vidrioensis zone, King's Sec. 12, bed 26 (p.66 UTBull). 7/26/58/11 - King's bed 24, Sec. 12, upper part in conglomerate portions. We saw no fusulines from bed 22 up through bed 31 of King's section 12. 7/26/58/12 - Bryozoans from Bed 22 of King's section 12. 7/26/58/13 - Ceratites from bed 24, King's section 12. PG. 98 Blank PG. 99 Collection locality for fusulines on Page Twiss' Thesis area south of Van Horn, Texas. {note: illustration followed} PG. 100 7/28/58 Brook Ranch 7/28/58/1 - West of Brook Ranch House, in bed 3, Sect. 14. 7/28/58/2 - Bed (22) or 28? King's Sect. 28, up road to back country. 7/28/58/3 - bed 16 (24?) [Probably King's bed 26], King's section 28, Hess fm on Brook's Ranch up road to back country. 7/28/58/4 - Upper portion bed 19. Sect. 15b. 7/28/58/5 - Lower portion bed 19, Sect. 15b. 7/28/58/6 - Sec. 15b, bed 19. PG. 101 7/29/58 Decie Ranch with Dr. Phillips We went to Sec. 19 (Sec. 7 in G.S.A. Memoir 88) and collected from bed 5 (7/29/58/1, 2 bags), this has Triticites sp in it and suggest late Penn Age. The way back lead us down and across the arroya to the SW and up on the side of the terrace level. Here we made collect from a anthill about 40' below the base of bed 5 (7/29/58/2) in sandy and silty beds.
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7/29/58/3 - is from about 100 yards downstream on the SW side of the arroya. The fusulines an Pseudosch wagerer sp and Schwagerina sp, Bryozoan, Brach and Ammonites. 7/29/58/5 - 200 yards east of 4. The Wolfcamp is apparently a small fault slice (grauber?) in the Penn. The beds are in the Penn and Pm below the unconformity (conglo) faulted and PG. 102 badly folded. Individual beds are not traceable for more than about 50 to 60' if that far. This is apparently the top of a thrust-sheet according to cement theories - seems pretty reasonable. PG. 103 7/30/58 Wm Meuhlberger show J. Phillips and myself the Maravillas section at Ft. Pena, and the Daggerflat, Marathon (Buttrell Ranch mbr) and Maravillas behind the Leary Ranch. Miss Eveland and Davis (Launar Tech) showed us the Bissett Conglo, Upper mbr of the Capitan, about 2 miles due north of Altuda when we made 2 collections of bryozoans but found no fusulines associated. J. Phillips left on night bus. PG. 104 7/31/58 Hess Ranch Facies changes in Wolfcamp interval along SE face of Leonard Mt. The WC conglo thins to the NE, the limestone middle interval thins and the Dolomite mbr remains about the same, the upper light gray limestone (Coll. 7/23/58/3) is same as that limestone just about the dolomite at the crest of the Mt. AIR PHOTOS - first location at top of hill above Sect. 37 - Sect. 37 cont. (from p. 67) 10) limestone, fine grained, light gray, few recognizable fossils - 17' - 1'-2' beds. 11) Dolostone, medium brown-gray, 1' to 1.5' beds quite porous - 22' top of ridge. Working east along ridge limestone again began to occur stratigraphical above this section. 12) Limestone, light gray, fine grained, 6" to 2' beds 32' to top of highest point on this ridge (about 150 yards) east of line up ridge in Sect. 37, Collection 7/31/58/1 from Anthill below upper most 3' bed. PG. 105 7/31/58/2 - Anthill just above a sponge reef. Some of the coll. is from reef and darker limestone just above reef. Hexacorals, brachs, sponges, bryozoans? well silicified. South side of valley, Hess Horst 3/8 SSW of spring tank. Walked this unit into King's bed 7, section 22.
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7/31/58/3 - King's bed 8, section 22. 7/31/58/4 - about 15' above 7/31/58/2 on same hill, different anthill however. This is in the silicified thin bedded limestone and reddish to yellowish siltstone facies like the lower Leonard on the Decie Ranch above the Hess ledge - Clouded over at 4:00 Thin beds grade north into Leonard shale lithology. PG. 106 8/1/58 Hess Ranch The canyon through the Leonard Ridge at the east end of the Hess Horst is formed by a flexure at the escapement. Here the fold is monoclinical with about 30' of offset. This same fold increases in magnitude NE and forms the steeply dipping ridge of Lower Leonard just S of the Intrusive mass. The valley is formed because of a zone of step faults 6" to several feet apart. This is a "shear" zone in which the shear strikes about N50E and are vertical +-. 8/1/58/1 - Coll. of Bryozoan from lowest Word limestone on Road to Old Word Ranch. Also a member of brachs and a pelvic bone of something. One brach looks like Pentisporifer pulcher [?] but can't get it out - the darn Rock is too big to move. This is about 150' below Word #1 limestone. Sent pelvic bone to John Wilson U. of Texas. 23 August. PG. 107 8/1/58/2 - Loc. 86. 50 yards WSW of top of limestone at southeastern side of intrusion in Hess Horst. Anthill in a limestone about 15' below highest limestone exposed on this ridge. ie. King's Map is wrong here. Schwagerina guemblei. PG. 108 8/2/58 Leonard Mt. 8/2/58/1 - same as 7/23/58/1 8/2/58/2 - 30' above base of Wolfcamp conglomerate SW Leonard Mt., one frag of a cobble containing fusulines included. U. of Texas Field Camp came up to look at the SW face of Leonard Mt., I gave them the Ross interpretation. It is about 250' up through folded rocks of probably Haymond equivalent, before getting to the lowest conglomerate. The SE dipping Gaptank beds are near conformable on top of the this lowest conglomerate, and thicken towards the SE. There were gently folded and truncated so suggests fluxes rather than more or less continuous movement. In my section 35, there are a few more feet of brown siltstone above the "Dimple" limestone than shown. PG. 109 8/2/58/3 - 10' above massive conglomerate unit at Hess Horst. This is about 2/3 of the way up the slope at the east side of the saddle separating the 2 main ridges of the Horst. Free specimens, mostly loose in the slope but many beds of fusulinid limestone in place in this interval.
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1) Lower portion of hill is coarse cobbles of various limestone, in massive 5' beds, at least 275' of these. 2) Dolosandstone, many fusulines in a 35' interval, bedding and sorting good, but rather weak rock not well exposed. Collection 8/2/58/3 free specimens on slope and anthill. 3) Dolosandstone and calcarenites, in 3-4' beds, abundant small gravel of greenish to brownish chert, 45' +-. PG. 110 4) Dolostone, fine, dark gray, brown weathering in 6" to 1' beds - 60'. 5) Limestone, medium-light gray, thin cap in top of hill, Collection 8/2/58/4 from anthill at top of upper limestone - 50 yards NW from highest point on ridge. 30' +_ . Contains a large slender fusuline - yes. The lower conglomeratic unit is beautiful foreset on the north side of the Hess Horst. There the conglomerate bed strikes N80E the same as the overlying "sandy" dolostone limestone, but they dip about 30° to the NW, whereas the limestone above dips only 9° - These we have about 20° initial dip on these beds. 8/2/58/5 - shaly interval, free specimens on slope, 200 yards NE of saddle between 2 major hills in Hess Horst. 8/2/58/6 - a pebble from lower conglomerate about 70' above intrusive near saddle between 2 main ridges Hess Horst, west side of draw. Contains 2 types of well preserved Triticites. PG. 111 8/3/58 Dugout Mt. 1/4 mile WSW of section 24 in the "Hess" ledge and the folded faulted belt rest on top of one another and the "Wolfcamp" interval is entirely missing or if present is represented by 5' or 6' of shale beds. Collection 8/3/58/1 - fusulines from shale slope beneath folded "Gaptank" bed at the above locality. Primitive Triticites. Loc. 63 Collection 8/3/58/2 - anthill in covered interval between east "Gaptank" bed and base of "Hess" ledge - This is 5-6', could be "Wolfcamp" (small Schwagerina or Paraschwagerina 14 Collection 8/3/58/3 - loose specimens at the base or a few feet up in "Hess" ledge all at the first locality (Large Schwagerina). Several small faults can be seen cutting the "Hess" ledge in this 1/4 miles. Loc. 85 Collection 8/4/58/4 - about 75 yards east of Collection 8/3/58/1 - this is from a tightly folded anticline - axis is N55E, NW limb 80° W dip, east limb is 90° to 120°. This collection.
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PG. 112 contains large Schwagerina - 8/3/58/5 - due south of section 24 in folded and faulted belt. This is from an anthill 50 yards south or road at crest of hill. Black and color picture of Sect. 24. A large fold here at base of Sect. 24 has its axis N65°E, E limb 90°, West limb is 60-80° W. See p.22 - I doubt very much of the reef collection are from the same sequence as the measured sections. These bioherms seem to form beds in the folded and faulted portion and are therefore older than the “Wolfcamp” conglomerate and “Wolfcamp” sequence. 8/3/58/5 - from “Haymond” of King below first windgap SW of summit Dugout Mt. This is from an anthill about 300 yards east of the junction of two major washes. Seems to contain Fusuline. PG. 113 8/3/58/6 - float from shale interval above bioherm just below first windgap SW of crest of Dugout Mt. 8/3/58/7 - from bioherm (in place?) at least from the rock, beds seem to be shattered- These are probably faulted and folded prior to “Wolfcamp” time. Probably not - has S. nelsoni. Bioherm has several corals, and at least one ammonite. 8/3/58/8 - second Bioherm - smaller but is nearly vertical - corals and a few brach frags. 8/3/58/9 - north end of Payne Hills about 1/2 mile NE of spot King has map as ammonoid beds - This is “Gaptank” and is a dark gray to black limestone and dark interbedded shale - The general impression I get in the field from just looking at the fusulines and the lithology is that the younger rocks are exposed in the eastern most outcrops around the SW end of Dugout Mt. and PG. 114 as one goes eastward and northward older rocks are exposed. The lithology of the Haymond as mapped by King is apparently fairly good criterion. Collection 8/3/58/5 occurs in a limestone bed and is overlain and underlain by greenish sandy siltstone with worm burrows and tracks. About 200' above this collection if the sequence here is not too badly displaced by faults, the beds are brown- orange weathering sandstones some of which have flow rolls, but little graded bedding, although cross bedding is common. The Haymond and Gaptank form an anticline just beneath the first windgap and the beds are steeply dipping to the east. The second biohermal ledge is near vertical and possible is the steeply inclined Western link of this anticline and possibly the same bed as the first bioherm. If this is so the fossils are not the same for the second bioherm contains only corals without the fusulines and brachiopods. PG. 115
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In the second bioherm are less numerous although of the same type (probably the same species). Some of the fossils from Collection 8/3/58/4 which were loose may be from the terrace alluvium, but certainly not all of them. The relation still probably exists that these folded rocks to the west are younger. The trend of the “high” would pass beneath the windgap section and above so it is possible that either the bioherms are 1) in place in the “Wolfcamp” sequence; 2) They are folded and/or faulted on the top of the Gaptank or 3) were folded with the Gaptank beds and the whole sequence is an overturned anticline and the steep east dipping beds are the west limb. I would favor explanation 3 most at the moment. The collection from north end of Payne hills is from a limestone similar in color to the Dimple. If the nearby Fusuline beds and PG. 116 (and the ammonoids are Mid Penn) it would suggest the Pennsylvanian rocks of the area should be reconsidered. As it is they are not usable except in a vague general way. PG. 117 8/4/58 Dugout Mt. (North end) King has mapped a fault along the NE face of Dugout Mt., but it is a rather minor thing. The area west of the “Wolfcamp” conglomerate escarpment seems to be Wolfcamp cyclic deposits. The “Hess” ledge seems to be west of {note: illustration followed} PG. 118 the creek draining Dugout Mt. for the most part. 8/4/58/1 - Anthill at top of NE exposure of “Hess” Ledge. Dugout Mt. These fusulines and bryozoans couldn't have come far. The upper portion of the “Hess” ledge at the windgap at NE flank of Dugout Mt. is beginning to shale out toward the NE. 8/4/58/2 - from an anthill and shale slope from middle portion of “Hess” ledge on the north flank of Dugout Mt. when the stream cuts down through the Hess. Loaded with fusulines and bryozoans, but not much else. 2 bags. 8/4/58/3 - from a bed of dark calcarenites about 50' below limestone ridge forms, about 300 yards northeast of collection 8/4/58/2. PG. 119 The lower Leonard shale and siltstone sequence is almost entirely brown-orange weathering siltstones as one goes south along Dugout Peak. PG. 120 8/5/58
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Spend day in town drafting up section and trying to make sense out of the Hess area. Sections 37, 39 and 41 seem to fit a pattern. The increase thickness of conglomerate in 41 is apparent the result of measure up through another thickness of foreset conglomerate beds. 41 is more basinward and contains at least one thick set of conglomerate beds. The picture from the top of Hess Horst should show this quite well. The lower part of King's section 22 I just can't place in my sections. King's says his bed 7 can be traced laterally in to his bed 4 Sec. 21 (my bed 18, Sect. 37). His great thickness of limestone (bed 4) would then be equivalent to my shaly interval in Sect. 41 (beds 14,15,16). PG. 121 Afternoon, Hess Ranch, went up King's section 22. (Probably not quite the same place as King 22). Covered below 1) Conglomerate - limestone pebbles of various sizes up to 5" diameter near base, chert and quartzite pebbles about 3" max diameter. In limestone matrix, Higher the conglomerate becomes fine and white and greenish chert pebbles 1"- 2" diameter are common to abundant. 70'. 2) Covered, 25'. 3) Limestone, yellow-orange weathering. Fine grained with much colored silt, in large part dolomitic. Bed are 6" to 1', poorly exposed, probably with much interbedded shale. 30'. 4) Covered, 26'. 5) Limestone, medium gray to gray-brown, fine grained and in large part dolomitic occasional patches of loss dolomitized rock with poorly preserved fusulines. 195'. (King's bed 4). PG. 122 6) Massive limestone (King's bed 5). It is this bed that can be traced into bed 4 of King's section 20. I don't know where King got 201' for his medium gray limestone (my bed 5). The lower part of his section is seeming way off, did he estimate if from the top looking down? [5/00 - my original 95' does not fit with either section King's 22 or 21, but 195' does]. The light gray limestone unit I've been tracing eastward changes to dolomite about 1/2 mile east of King's section 22. It can be traced approximately in to King's bed 4, Sect. 23. It is also traceable into bed 3, King's Sect. 24, and into either bed 10 (my sect. 8b) or the siltstone shale interval just above it. PG. 123 8/6/58 Moore Ranch - Moore Ranch Road to High land - collected from the interval near the top of the ridge. {note: illustration followed} PG. 124
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(Sect. 32 cont.) see pg. 52? [Section measured in two parts, upper part here p.124-125 and lower part from middle of p.126-127-128.] Top of ridge, gap were road passes on top [This part = Brooks Ranch Mbr]. 36) Limestone, drab gray weathering, medium brown-gray on fresh surface, (Lenses of yellow limestone also), fine grained calcarenite with abundant fusulines and some gastropods. 15' (2' beds). Collection 8/6/58/1 near top, Collection 8/6/58/2 middle. 35) Shale, green and dark, 6'. 34) Limestone, weathers yellow-gray to greenish-gray 1'-4' beds, calcarenite with much silt, bedding is uneven, has conchoidal fracture, contains fusulines and some smaller fragments, and gastropods; "shale parting" are drab siltstones with some clays and many fusulines, all beds quite lenticular. Collection 8/6/58/3. 27'. 33) Alternating yellow siltstone and yellow weathering limestone. Siltstones 2' to 6' with abundant fusulines near base, gradational lithology with each underlying limestone. Limestones are dark drab color or fresh PG. 125 surface, weather yellow. Top unit is drawn arbitrarily at a nearly rubble zone 1' thick in road cut. Collection 8/6/58/4 (20') and 8/6/58/8 (at base) 33'. Sh 9/5/58/1 32) Shale greenish-gray and sandstone, greenish to brownish-gray - lenticular cross bedded some flow-rolls, 25'. 31) Sandstone, yellow-brown weathering, dark gray-brown on fresh surface, persistent unit - 2' (limy). 30) Shales, varicolored, red and grays. 21'. Collection 9/5/58/2. 29) Sandstone, yellow to brown weathering, 3' persistent (limy). 28) Shale, varicolored and greenish-gray sandstones, lenticular and cross bedded. Alterations of these 2 lithology about every 5' to 10'. 37'. Collection 9/5/58/3. (from p.126). PG. 126 ? Fossiliferous band in red siltstone zone in Hess conglomerate along east fence of Moore Ranch? Collection 8/6/58/5 - Word outlier in Falcon Ranch - This is about 20' above Word Conglomerate. Collection 8/6/58/6 - about 1' above no.5 Collection 8/6/58/7 - few fusulines and tetracorals from bed 12 Sect. [32] 37. [Base of Brooks Ranch Mbr of Lenox Hills Fm] 13) Hess Conglomerate - Calcarudite, light gray limestone cobbles up to 8" diameter. This unit thins and thickens a great deal. 35'. 14) Covered, greenish-gray shale inpart - 9/5/58/4 at top; 47'. 15) Limestones, light brown-yellow weathering, light gray fresh, vertical splitting on outcrop, bed 6-10", 8' dip 7°, N20W. 16) Covered 2'.
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PG. 127 17) Sandstone, quartz gray to brown weathering, cross bedded, beds 1' to 2'. 5'. 18) Covered, 4'. 19) Limestone like 15, 3'. (dip 20, N20W). 20) Covered, 8'. 21) Limestone, like 15, 2'. 22) Covered, 3'. 23) Limestone, like 15, 2'. 24) Sandstone, gray, crossbedded - 11'. 25) Covered, 12'. 26) Limestone, like 15, 1'. 27) Sandstone like 24, 16'. This interval was traced to the east about 200 yards and there the PG. 128 section follows the ranch road to crest of Hess escarpment (See pg. 124). PG. 129 8/7/58 Decie Ranch - map on Photos Collection 8/7/58/1 - from bed 2, Sect. 22 (book 1, p.151) couldn't #1 be a Wolfcamp conglomerate, the age of bed 2 could be "Hess". 2 bags - Bryozoan. 8/7/58/2 - Ammonites and fusulines from folded Wolfcamp southeast of base of sect. 19. This collection is near eastern margin of this light orange gray limestone belt. Massive 4-6' limestone, some nearly vertical, badly faulted 2 bags - 1 sent to GAC. 8/7/58/3 - from a limestone about 60 yards WNW from collection #1. 8/7/58/4 - from a gray limestone about 20 yards NE of collection #3. 2 bag - sent one bag GAC. PG. 130 8/8/58 West half Hess Horst. Collection 8/8/58/1 - from limestone at top of dolomite on western end of Horst, Strike about S40W dip 45°NW. 8/5/58/2 - Top of western ridge, Hess Horst - 2 ant hills in limestone and shale interval at top of Dolostone sequence. 8/5/58/3 - Here we get a limestone and shale interval at the top of the Dolomites. This is probably a more "seaward" facies. It is about 20' thick. The dolomite beneath this interval is 10' to 30' thick but occurs in discontinuous exposures suggesting several different zones of dolomitization. Beneath this zone of dolomites, there is a 80'-90' dolomitic limestone and some shales which contains
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a fair fauna - Collection 8/5/58/4 has Schwagerina sp. cf. to those in the Hess ledge in Lenox Hills. Limestone conglomerate below 180'-200'. PG. 131 I believe the upper part of this western Hess Horst Hill is equivalent to the interval above the dolomite and below the light limestone on Leonard Mt. The dolomite seems to be restricted to the massive limestones, (and calcarudites near intrusions) and shaly limestone intervals escaped dolomitization. If the dolosands were calcarenites originally, the porosity may be the controlling factor. The Faults on the north side of this hill seems to cut the Leonard (light) limestones, but to swing westward and become bedding place faults in the shaly and limestone interval at the top of the "Wolfcamp" in general. Collection 8/8/58/1,3,4 - are probably from the same horizon as 8/2/58/3 and 8/2/58/5. I believe some of the "Wolfcamp" section above the conglomerate on the Western end of Hill is missing as a result of faulting. PG. 132 The fault which I believed cut Section 39 isn't there - add 75' to that section! The structure in the lower shaly beds must be related to a NE-SW fault or to the intrusion (or both). PG. 133 8/9/58 Mapped East side Leonard Mt. Collection 8/9/58/1 - from probably a chunk of Gaptank at the base of a terrva block, east side Leonard Mt. PG. 134 8/11/58 Tom Williams showed me around Huecos Hueco Mts. 8/11/58/1 - first road cut, 0.3 miles east of road site cut, west base of Hucco Mts. From a purple band in Madgalena limestone (Penn). 8/11/58/2 - 5' above Powwow conglomerate in slump back along highway 0.2 miles northeast of collection #1. 8/11/58/3 - base of section in next road cut. 0.1 miles east of #2. Also 8/11/58/4 from some interval. 8/11/58/5 - from Upper part Mid Hueco, at or near Thompson's locality T-239 (William's, Hueco Mts - 15 min - W - #10). 8/11/58/6 - Alacran Mt., base of second massive limestone SE side. 8/11/58/7 - Top Deer Mt.-Sh in Upper Hueco - Old Butterfield Trail, near head of Canyon. PG. 135
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8/11/58/8 - South side entrance to Hueco Canyon, at base (or very near base of Hueco limestone). Tom believes he has only 5 or 6 fossiliferous zones. Collection 1 is from the Penn. and perhaps can be correlated with Coleman, Texas Section. Collection 2 and 8 are from approximately the same horizon at base of Hueco limestone section (top of Powwow?). Collections 3 and 4 is in the lower Hueco limestone, this zone seems to carry through to the north. Collection 5 is from the lowest of 2 fusulinoid horizon in the upper portion of the middle Hueco. Collection 7 is from top of the Deer Mt. "shale" (marl) and Collection 6 in Alacran Mt. as well as productids and colonial rugose corals. Tom believes he has one more fusulind zone higher in the Upper Hucco. The scattered fusulines above #6 look "Leonardish". The rest of these specimens are robust PG. 136 healthy big ones. Few if any small ones were found and those few small ones (nearing collection 8) are probably immature forms. (Tom's roads are a mess, and he has had to sell his pickup truck for a jeep.) 8/12/58 8/12/58/1 - large ravine due east Lincoln Tank and SW of Hill 5509 Hueco Mts; 1.5 miles west Naville Mt. 50 yards up stream from first massive outcrop. Mid Hueco? 8/12/58/2 - So end of Hueco Mts. about 3 mile SSE of El Paso north at gas pump station. This is just above (30-40') the steeply dipping El Paso limestone. PG. 137 8/22/58 Gaptank Area - Allison Moore Ranch. Bed 5, Section 16 (40 written above 16) = King's third limestone of Gaptank fm. Bed 19, Section 16 (same as above) = King's fifth limestone of Gaptank fm. Bed 15-17, Section 16 (same as above) = King's fourth limestone of Gaptank fm. Bed 21, Section 16 (same as above) = King's Wolfcamp ledge. Collection 8/22/58/1 - shaly interval in persistent gray limestone unit forming end of valley north of section 16 - This is = to bed 36, Sect. 32. Sect. 16 cont. to top of section. 45) Limestone, brownish-gray weathering, 4"-8" beds, shaly partings lenticular and more brownish. Staffella, Schwagerina and Composita, echn. spines, fenestillides. Collection 8/22/58/1 - near base, 8/22/58/2; 20' up and 8/22/58/3 at top of unit. 112'. (above this unit is a series of silt dolostones and interbedded shale (brown to red) in 6" to 2' beds - 200 +- until covered by alluvial + K). The highest collection has 2 Schwagerina one is fat and the other fusiform - tie in with Hess ledge west of Marathon?
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PG. 138 44) Covered, probably light gray to brown shale, 42'. Collection 8/22/58/4. 43) Sandstones, deep orange-brown weathering, very fine, silt high, very fine lamination, crinkled, 1.5'. 42) Sandstones, light green-gray, medium grained, cross bedded, lenticular; siltstone and shales varicolored to red to green; lenses are irregular, reworked Tenus or Haymond. 4' to 8' beds, 107'. 41) Covered - 34' probably like above. 40) Sandstone, light gray, cross bedded, 15'. 39) Covered - 85'. 38) Sandstone, light cream to light brown; medium grained, cross bedded, 6" to 1' beds, 18'. 37) Shale, red, 6'. 36) Calcarudite, 5" to 6" gravel, red shale and silt matrix - T. ventricosus in pebbles. Collection 8/22/58/5; 23'. PG. 139 35) Calcarudite, medium gray, some black chert and limestone pebbles, limestone cement and matrix - 15'. 34) Covered, probably red silt and shale and some limestone cobbles, 23'. 33) Calcarudite, medium gray, Calcite cement, 6'. 32) Covered, 25'. 31) Conglomerate, mostly non-limestone cobbles grading from ss in base, brown - 19'. 30) Repeat of above, 28'. 29) Covered, 34'. 28) Conglomerate, 13' like above. Collection 8/22/58/6 at top of bed 23, Sect. 16. Sect. 16 cont. 8/22/58/2 - bed 19 and 20, Sect. 16. PG. 140 Bed 5, Sect. 16 (40) - the lower rumble and shell hash portion thickens to the west and becomes massive and the upper part becomes shaly at the base and shale gradually replaces most of the limestone in a distance of 300 yards. (to the point below which Sect. 31 (39) starts). Bed 5, Sect. 16 final grades laterally in to brown-gray limestone in 1'-2' beds about 400 yards west of Sect. 16 (40) - There, it is cut by a NNE treading fault which has drop the cast side down about 15' stratigraphical. Collection 8/22/58/8 anthill at top of eastern side of fault. West of Sect. 30 (38) the upper portion of King's third limestone (bed 11, Sect. 30 (38)) becomes massive in 2'-3' beds, crinoidal frag - forms little knob in valley. Dips on this outlier are from 25-70 N. Bed 7, Sect. 32 (39) is equivalent to bed 24, Sect. 30 (38). Bed 9, Sect. 32 (39) = Bed 12, Sect. 30 (38). PG. 141
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8/23/58 Beds 11, 12, Sect. 32 (37) = +- to Bed 23, Sect. 16 (40). "Hess" erosion has removed much of this interval. Bed 7, Sect. 32 (37) = Bed 7, Sect. 31 (39) - (it must!) +-. Southwest of Marathon, Texas 8/23/58/1 - from "Gaptank fm" about 200 yards NW of King's Ammonite locality about 2 miles south of Arnold Ranch. 8/23/58/2 - same general area as above about 150 yards SW of Ammonite - locality. Weren't able to fine ammonite bed however. PG. 142 8/24/58 Bill Berry reports that limestone and dolomite sequence on southwest face of Leonard Mt. intertongue and thins into shale and siliceous shales, according to G.A.C. 8/24/58/1 - at base of lower conglomerate (dark brown) above highest Gaptank gray limestone at Gaptank in fault silver at Gaptank. 2 bags. Basal Wolfcamp. 8/24/58/2 - south of Allison Ranch House, second gully S. crassitectoria zone (probably pretty high). This is about 40' thick here with interbedded siltstones in the dolo-silty limestones 6" beds +-. At Gaptank there are at least 4 faults which cut the Gaptank and Wolfcamp beds. Most of these can be traced into overlying K. The #4 and 5 limestone of King are repeated units of the same bed. The major fault cuts the Gaptank fm. between the old road and the Tank south of the Allison Ranch the conglomerates on an algal limestone - approx equivalent to the middle part of King's #5 limestone in the Gaptank (at Gaptank). (Allison Ranch House). PG. 143 The Schw. crassitectoria zone (base) is about 182' above the base of the conglomerate there but the section is disturbed by several faults which may thin the section a little bit. The limestone and silty dolostones in the "Hess" facies contain considerable more interbeds of brown-red siltstones and shales. Omphatrochus also occurs here with some other gastropods. Many of the megafossils are silicified. Crinoid frags of bryozoans (rhomopora) are relatively common. PG. 144 8/26/58 Dugout Mt. 8/26/58/1 - Sec. 27, bed 3 (= 8/9/59/2) 8/26/58/2 - Sec. 26, bed 10 (= 8/6/57/2) This is above the Sect. 27 about 400 yards SW in about same interval 8/6/57/2. 8/26/58/3 - boulder above Hess ledge - may represent crassitectoria zone. 8/26/58/4 - NE of Dugout Mt. on small knob about 35' above base of "Hess" ledge.
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8/26/58/5 - Ammonid zone Dugout Mts. Sect. 26, bed 4. The Hess limestone conglomerate - grade laterally into yellow-orange siltstones and shale. The siltstone and shale increase to the SW along the face of Dugout Mt. at the expense of the upper limestone and conglomerate of the Hess ledge. All of the limestone are lenticular in the lower Leonard. Same thickness for 0">2' or 3' along strike, one of the highest conglomerates disappears 20' +- to 0 in 100 yards. PG. 145 The Hess ledge thins from Sec. 26 to the NE looses conglomerate and limestone and picks up siltstone and shale and then back again to conglomerate. Big facies picture - no really good top to the "Wolfcamp" sequence here. Wilde showed me the conglomeratic ammonite bed on Dugout. It is full of the big undescribed Pseudoschwagerina and other fauna of about same horizon. Equivalent to Hess Ranch section. PG. 146 8/27/58 SW of Fault at Sullivan Ranch Road. 8/27/58/1 - Hess ledge - upper part about equivalent to bed 25 of section 20. 8/27/58/2 - float about 20' up in interval between first Leonard limestone and Hess ledge. 8/27/58/3 - about 20' above location of #2 above. NE of fault - Sect. 21. 8/27/58/4 - Hess ledge at bottom of Hill - has Pseudoschwagerina (small) and is at top of Hess interval - bed 1. 8/27/58/5 - cobble of Hess ledge bed 1. 8/27/58/6 - top of first Leonard limestone bed 12. PG. 147 Skinner and Wilde talked about a Gilliland Anticline which connects with Hovey and Davis Mt. - They draw the axis down along Blue Mt. and across Jail Canyon into Iron Mt. and then out into the Marathon Basin. Skinner believes the lower portion of the Leonardian doesn't make it across this Anticline to the west of about Iron Mt. There the Hess ledge is mid Leonardian according to him. Questions to consider - 1) What happens to the S. Crassictoria zone to the west - note one boulder collection from Dugout Mt. which may have it. Wilde suggests the Wolfcamp shale will probably be absent on the West Pyle Ranch Area - [With friends like these, who needs...]. PG. 148 8/28/58 NW Slope Leonard Mt. {note: illustration: W E bed 1: Covered.
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bed 3: 8/28/58/2; 120'. Limestone conglo. near top. Limestone light gray, second chert, 2'-6' beds forms large portion of dip slope, fossiliferous in part. bed 4: 70'. Siltstone, some ss., orange weathering, siliceous bands. bed 5: 45'. Limestone light gray, 4'-6' beds, chert pebbles. bed 6: 30'. Siltstones, and chert - orange to red-brown. Cherts are replaced by limestone bed 7: Thin bedded limestone} Either of these 2 siltstone intervals could be called typical Leonard. The upper 2 limestone can be shown to pinch out into siltstone near the stream divide between Hess and Iron Mt. Ranch. (Picture) 8/28/58/1 - upper part of first limestone that caps ridge - "Bench Mark limestone" - Big Schw. 8/28/58/2 - in Mid of Dolomite Mbr. at head of Canyon just west of Main NE treading ridge. PG. 149 Brooks Ranch Collection 8/28/58/3 - S. crassitectoria zone above section 10. Collection 8/28/58/4 - Trit. zone at top of section 11, bed 19-20. This limestone seems to be a remnant and is cut out west and east ward except at a couple of places on Brooks Ranch. The upper beds of Sec. 11 from about bed 12 on up to 22 seem to be higher than the major portion of the ledge forming limestone 6-12. Another patch of this higher limestone is found behind the Brooks Ranch house. This ledge former seems to have a gentle syncline in it at the Ranch House over which the Conglomerate has truncated and eroded its surface. The Sec. 11 is apparently a hill with conglomerate around the sides. PG. 150 8/31/58 Brook Ranch 8/31/58/1 - bed 1 of Sect. 10 (29) about 1/2 mile east of where section was measured above Keyte Blanchard and Baldwin's Uddenites locality - Bed 1 of Sect. 10 (29) is gradually truncated to the east. In Sec. 13a (31a) this interval is formed by beds 1-3 or the rubbly stuff just below these beds, and = Sect. 11 (30), bed 1 and below. Sect. 14 (32), bed 3-6, = Sect. 15 (34), bed 12- 14. Bed 1 of Sect. 10 (29) is double limestone unit separated by a marl zone. Both limestone are generally massive, but the higher one usually covers the lower one. Sect. 10 continued - from Bk1, p. 80-84. 15) " badly covered - Total - 127'. 16) Shale - silty, light gray - 12' grades upwards into bed 17. 17) Limestone, light ray, silty an clay - 3'.
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18) Shale, gray, with limonitic silt zones, - 14'. PG. 151 19) Limestone, light gray to brown weathering, silty, with interbedded shales, - 8'. 20) Sandstone, green to purple-brown, medium size grained, cross bedded - 1.5'-3' beds, with interbedded shales and silts - 35'. 21) Covered, 9'. 22) Limestone, light, brown, silty, dolomitic, 6" to 1' beds, with some thin brown shales, silicified to some extent, - 22'. 23) Covered, 12'. 24) Sandstone, orange-brown weathering fossiliferous - pelyc, brachs, algal plates, Collection 8/31/58/2 (2 bags) 3'. 25) Covered, 32', mostly green-gray shale crossbedded ss. 26) Limestone brown to orange-brown weathering, 6"-1' beds, very silty and clayey. - 8'. (Attached sheet: Sect. 29 Brooks Ranch Mbr. Lenox Hills Fm; {note: illustration: bed 15: 127'. bed 24: 8/31/58/2. bed 25: marine bed 31: S. crassiti} PG. 152 27) Covered, 7'. 28) Sandstone, brown-cross bedded, 8'. 29) Covered - 6'. 30) Limestone brown to gray-brown weathering 6" to 3' beds, very silty - 21' with interbedded silts and shales. 31) Limestone, light brown weathering, 1'-2' beds, many fossil frags including S. crassitectora zone. Collection 8/28/58/3. This is a dominantly limestone, interval 35'+ to top of tree covered knoll. PG. 153 Sept. 1, 1958 Leonard Mtn. Climbed up from Conglomerate-Terrva exposure. 9/1/58/1 - anthill in a gully about 2/3 the way up in the Gaptank - not sure any of these are from Gaptank however. 9/1/58/2 - anthills about 75' below "Wolfcamp" conglomerate Leonard Mt. Again not sure any of these really in place in the Gaptank fm here. 9/1/58/3 - slope just above highest Wolfcamp Conglomerate. 20' of shaly-silty calcarenite interval. 9/1/58/4 - 40' above Conglomerate - 2 bags. 9/1/58/5 - bed 5, Sect. 39.
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PG. 154 Sept. 2, 1958 Iron Mt. Ranch. Sect. 42 - measured up cliff to west of Iron Mt. at a point due west of southern most portion of Iron Mt. Lower Slope covered by Terrva Blocks. 1) Conglomerate, limestone and chert pebbles up to 8" diameter, 5'-10' beds; pebbles have Triticites and possibly Schwagerina (or Kansinella) in them. 22'. 2) Limestone, medium gray weathering, thin bedding (1" to 1') even bedding surfaces, Fetid fossiliferous on bedding planes. A few brachs, bryozoans and fusulines, but mostly crinoid columnals - a frag. limestone sand-well cement. Collection 9/2/58/1 - 55'. 3) Limestone with increasing % of pebbles and cobbles, still much like 2 except 1'-3' beds. Collection 9/2/58/2 - loose on slope at base of interval, 2" diameter crinoid columnals are common in this interval, fine gravel size dominate, a few 2"-3" pebble. Collection 9/2/58/3 upper 10'. 78'. PG. 155 4) Limestone conglomerate. 10" to 12" diameter, Bacceninella beds, 2.5" crinoid columnals - 12'. ("Hess Ledge")? 5) Dolostone - light tan weathering, molds of fossils, massive, 55' grades laterally into fossil hash, (silicified) fault at top of ridge, general NNE strike, vertical filled with calcite - rocks on either side are of same lithology but beds don't match too well above fault. 6) Limestone shell hash, weathers saccordal and dolomitic like 5) 15' top of slope. 7) Siltstone, orange-brown, with brown siliceous bands (2"-4"), makes back slope - This is Leonard! Dip 14° to the N40W. This upper limestone can be traced into the cliff behind Decie's double windmill (Sect. 22) King's first Leonard limestone pinches out NE of Sullivan Ranch Road (second ridge former north of road). PG. 156 9/2/58/4 - Gaptank fm, dark limestone, thought it was Dimple at first, rests on greenish-gray sand and siltstone sequence - looks dark enough to call Tenus but is probably Haymond. All badly folded and faulted. At southwestern end of hill, a brown chert conglomerate rests directly on folded, east dipping Dimple. Sect. 43 (dip 14; N50E strike) Dimple, Caballos (and a thin if any Tenus) are folded, but not badly faulted. Axes of folds here are N70E.
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1) Conglomerate brown chert and quartzite dominate (1/2-1") brown cement, a few dark limestone cobbles 3". 0'SW - 15'+NE, 25' on hill side. 2) Covered, probably light brown silty shale - 12'. 3) Sandstone, orange-brown, silicified in part. A few fossil molds - (?) - 3". PG. 157 4) Siltstone, mudstone and shale, interbedded very sandy, gray to greenish- yellow color. 22'. 5) Like 3, with 1/4" beds and crinoid columnals - 3". 6) like 4, 2'. 7) like 5 (collection 9.2.58.5) 4". Contains "Decie Wolfcamp" fusuline fauna in part. 8) like 4, 10'. 9) Sandstone, medium to light brown 8" some conglomerate pebbles. 10) Sandy siltstones and shales, some limonitic stained bands of ss (very fine grained). 41'. 11) Sandstone, light orange weathering, no internal lamination; total - 1.5'. 12) Sandstone, light tan, friable, some silty horizons - 2" to 8" beds - 20'. PG. 158 13) Covered (here), continuation of bed 12 as seen in next gully north - 14'. 14) Limestone, conglomerate, some chert pebbles but generally small 1/4-1/2", cobbles of limestone up to 7" diameter. (= bed 1, Sect. 42). PG. 159 9/3/58 Iron Mt. Ranch North end of Lenox Hills Dimple, Tenus and upper Caballos are repeated several times here. The highest of the beds are less than 250' from top of this last crest. Beneath the massive limestone (75-80' thick est.) is a marly or sandy interval at least 70' thick, about another 70' are covered, then the folded Penn beds. Most, if not all, of Sect. 43 is missing 3/4 mile SW of where that Section was measured. Unit 14 (Sec. 43) rests on the brown limestone on the Dimple in a couple of low hills. Sect. 44 West end of Leonard Mt. - gully toward reentrant. Gaptank 1) Limestone, dark gray to black, fusulines Triticites, echinoid spines, crinoid columnals, 2' - 3' beds dip south at 10° Total - 12'. 2) Limestone medium gray to brown - changes to shaly strike, massive, sparingly fossiliferous - dips south 5°. 17'. 3) Covered, 20'. PG. 160 Wolfcamp dip NW 7°.
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4) Shale, light brown silty, and yellow-orange iron stained calcarenites 6", with numerous fusulines (Collection 9/3/58/1 near base) 16'. 5) Covered - probably like 4 - 35'. ( a few scattered flat outcrops suggest same fusulinid types). 6) Conglomerate many chert and limestone pebbles <3" diameter, orange-brown sand matrix with fusulines (S. linearis) - 8'. 7) Covered, probably shale, and limestone interbedded 100'+-. Collection 9/3/58/2 float. 8) Limestone, in large part organic frag., upper [25']. 9) part has limestone cobbles in it. - [10']. 10) Covered, limestone and shale probably 40'. 10) Dolostone, brown weathering [40] overlain by Leonard Mt. sect. shown on page 148. This interval 6-9 apparently thickens to the east along the face of Leonard Mt. The massive conglomerate Sect. 12, bed 12, there is represented in section 44 by 8' (bed 6) but the shales are largely a lateral equivalent of that conglomerate. The limestone in the eastern PG. 161 point of Leonard Mt. just above the Conglomerate are biohermal reefs and are cross bedded and thin toward the west to Sect. 44, thus beds 7 and 8 are its lateral equivalent. The massive dolostone thins toward Sect. 44 by losses of thinly bedded limestone off its upper surface. Just west of Sect. 44, the dolostone is nearly completely missing. The northern spur of the hill west of Iron Mt., like most of the rest of the hill is covered by terrva blocks. The first beds exposed below the limestone sequence are folded Gaptank containing very small Triticites. There is apparently trough or syncline of Missourian age rocks in the triangle between, SE Leonard Mt., southern tip of Iron Mt. PG. 162 Sept. 4, 1958 The Dimple near the highway at southern edge of the Neal Ranch property dips about 30°N, but at the eastern end where the highway passes through it looks as if the darn thing is an overturned anticline because you can trace the beds around from one limb to the other. There is a system to NE treading faults which began near this place and continues into the first little Dimple hill to the east. Then the beds are faulted and folded in a beautiful sinuous pattern. The Dimple limestone in this area contains a lot of upper Caballos chert fragments. It is silicified in bands and weathers to various shades of browns. It has flow custs but not apparently fossils. Some of the deep black chert beds are reminiscent of the Tenus. PG. 163
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Sect. 34 see also p.99 of BK.1. Sect. 14b - 1/4 mile east of Sect. 14, measured up a set of 3 massive limestones at the entrance to the west canyon near Brooks Ranch House. Dip is 12° to N20°E. (Top down) 16) Conglomerate limestone cobbles of various shades, mostly dark gray, 3” diameter. 7'. (overlying this is a siltstone, dolomitic limestone, sandstone sequence of the “upper Wolfcamp” it is apparently slightly more limy than the section to the east or west. 15) Limestone, light gray, in uneven beds 6” to 1' fusulinids common. Collection 9/4/58/1, large Triticites very fine clastic matrix (calcarudite) 24'. PG. 164 Sect. 34 14) marl, light green-gray, sandy, little or no bedding a few scattered fusulinids; 4'. 13) Shale, reddish-brown, very silty, and thin algal limestone (8” or less) 28'. 12) Limestone medium gray, medium grained calcarenite of fossil frags, bedding indistinct, many uneven solution pseudobedding however. Weathers to a shape pitted surface near top, lower bed 90% or more crinoid frags. 22'. 11) Limestone, much like that above except in beds 4”-8”, this apparent permits easier erosion and a break in slope a this interval. 8'. 10) Limestone, light gray, massive beds 2'-6', a calcaludite matrix with large intact crinoid stem pieces. 21'. 9) Covered, probably a rumbly zone of limestone. 26'. 8) Limestone, light gray, calcaludite with some small fossil frags. 5'. PG. 165 Sect. 34 7) Covered stream gully, probably a marly interval - 12'. - limestone - bed 6 of Sect. 14. These upper limestone occupy a syncline in the lower limestone. The “Hess” conglomerate thickens to the west but the total effect suggests an over lap of these limestone beds towards the west and apparently also towards the east (the erosion by preHess conglomerate is however more severe eastward). The “Hess” conglomerate probably still thins over these beds because of a former topographic high. The Leonard forms a monotonous sequence of massive dolostones in its upper portion on the Brooks Ranch. At all places I took dip and strike along C. Brook's northern cross-canyon the strike was with in 5° of being east west. The dips become gentler to the west of his N-S main high country road and suggest a
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slight anticline flexture toward the east. (Check to see if Moore's dips are any steepness). PG. 166 {note: illustration followed} PG. 167 The upper dolostones here are sacchoidal in weathered surface, the dolo rhombs about medium size. Occasional molds of fusulinids or brachiopod but not preserved well enough for identification. A few horizons seem silicified, but no apparent fossils. The lower carbonate is now a dolomitic limestone with considerable amounts of silt and clay. - This forms perhaps 600' at Brook's Ranch. Drove past Allison Ranch to outlier of K and walked over to the Haymond outcrop past to the NE. Here the Haymond dips about 30° SW, Strike N40W, without much apparent folding or faulting just nice even beds. These sandstones have fucoidal and flow cast marks and much slump crinkles - quite a mess. The "Hess" of King is very poorly exposed along the southern flank of the K cuesta. I haven't walked it out because it doesn't seem to be worth it - it might show a thinning or disappearance of the S.C. zone but the lack of control eastward and westward doesn't make this significant. PG. 168 9/5/58 - Moore Ranch Haymond red hill - 1) dip 15° NW, strike N65E about 100 yards SE of water tank. 2) 75 yards south of tank - dip 65° NW, strike N40E. These beds then swing around in an anticline whose other limb dips 18° SE strike N50E. It was on this structure that the Alexander Syn. drilled their well. 3) Due east of tank 150 yards, dip 45° N, strike N65E. 4) 300 yards east of tank, source as (3). In between the beds do a swirl, probably, tightly folded or faulted. 5) Lower Gaptank 200 yards NE of tank, dip 50° N, strike N65E: a) Conglomerate - 10 - top covered; b) limy, ss, with many fossils and shale largely covered. 90'; c) limestone dark gray, crinoid cochinas, 20'. 6) 100 yards ENE of Tank, Haymond dips N50°, Strike N80E. The Haymond is a very evenly sorted quartz ss, with medium to fine laminated beds, some cross beds and some slump structures. Weathered colors and red- brown and gray. PG. 169 Moore Ranch high pastures - (1) N85E, dip 12N.(2) due N14°,(3) K [Cretaceous]- N at 3; (4) near fault. Strike N75°E, dip 18°, but changes back to E+- strike and 9° N dip on each side.
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Head of Sect. 16 - K. dips N 2°. At mouth of "Road Canyon"-conglo by tanks dip 14°N strike is E-W. PG. 170 9/6/58 Moore Ranch Leonard Fm. Collection 9/6/58/1 - fusulinid coll about 850' above first S.Crasstectoria appearance. 1) Strike Leonard - N70E dip 18°NW. The Leonard has 2 rather distinct facies although the contacts between them is usually gradational. One is a silt and clay rich limestone which weathers a medium brown-gray. The other facies is a silt and yellow limestone in which the limestone have been recrystallized and dolomitized into patches of coarse crystals. Both facies have limestone with a high % of dolomite, but in the "yellow" facies extensive recrystallization is common. 2) Strike N85E dip 15°N. Collection 9/6/58/2 - 450' +- higher than #1 in Leonard. Just above massive limestone ledge (FB) on King's map. Collection 9/6/58/3 - about 300 yards west of collection #1 and at about the same stratigraphic positions. PG. 171 There are several fusuliferous zones in the lower couple of ridges forming grayish and brownish limestone. From field identification it would seem as if there are 6 or more Schwagerina species represent. Haymond Anticline - at Chonetes Hill. loc. [King's 1930 map locality] 1) dip 18°S - Strike N85E - Haymond 2) K dips 2°N 3) Gaptank Conglomerate 13°S dip 4) Haymond just beneath Chonetes Hill - dip 20° SE, strike N65°E. 5) Chonetes Hill - a little structured, up on south side, limestone swings around in a shallow syncline. Strike N45E dip 5°N. The first conglomerate is faulted down against the limestone and this fault runs NNE through the hill. The rest of the outcrop strikes about N65E and dips south about 15°. PG. 172 The Gaptank lower limestone is very dark and is apparently separated from exposures of Dimple out on the "Flats" because of the Dimple's lack of fossils. The lower Gaptank limestone and the Haymond are gradational - shales and thin ss giving way to shales and thin limestone in an interval of 20'. PG. 173 9/7/58 Lenox Hills - Collected for G.A. Cooper, see notes pg. 129.
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Section 23, ½ mile S. Allison Ranch. Being section not affected. Dip 35°, N45W. 1) Calcite, dark orange-brown, quartz, rich near top. Crystalline frags common. 1' Some wood frags. 2) Covered, 105'. There seems to be a few quartz and calcite, and rubble (s?), but mostly shale in this interval Coll. 8/3/57/1 at top 3) Organic frag s., major orange-brown near base. Light brown lighter, in bed 6' to 1', 1'/62' light gray shale interbeds. 44' Coll. 8/3/57/2 near tan 4) Covered 25' 5) Conglo.; light gray, microls calcite here. almost pure calcareous small buildings up to 10" diam. Coll. 8/3/57/3 8' affected; one pebble or cobble this collect has garnetines and seems to be related to the organic frag s "3 (which is definitely present in this core) 8/4/57 Dougout 14th. 1-21/ Coll. 8/4/57/1 - Above rubble and sample in well bedded Ness Ls; This beds helps form New dip slope of the hills are set extent of Dougout Mtn. Thin to from the SW and along 2½ miles NNE of the SE end of Mt. Coll. 8/4/57/2 - From near ground cover on wolfcamp Conglo. Slope. There is some concrete tank on top grade of long ridge extending NE of Dougout 21st; no other source for these fragment obvious, I would to be from wolfcamp. Coll. 8/4/57/3 - near base of wolfcamp slope and near gap tank (?) contact with wolfcamp. The lower most Wolfcamp Conglo here is a breccia of clast fragments with siliceous cemented cement. I would like to suggest this represents the uncutched (unexposed?) thrust sheet breccia and it served as a gravel source to prevent over the smoothly surface of the truncated and folded gap tank. Silica & hematite (calcretic times?) combined to cement the concrete parts together of the wolfcamp formation as well as our interjected). This might help explain some of the breccias on the Dece Ranch.
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22 There is another ls, similar to this one, about 40' higher; This could be slung from that. Coll. 8/9/57/4- From near the middle of the wrecamp in the stream gully which forms the 1st windgap SWy the peak. Itas from the lighter interval, equivalent to the 2nd bichurmed ls. This entire wrecamp here seems to alternations of brown-orange sandstone & grey shales. There is just some question where the wrecamp - and Gaptank should be split. The Gaptank forms an anticline beneath the Ridge at this point; the beds I've called wrecamp may be the evenly dipping sides of this Gaptank anticline. It seems evident from the general relationships that the wrecamp thus appreciably lies out & faced the crest of this structure and also that the source of the wrecamp deposits here are the sandstones of the Gaptank, not Dev shales! 2 There is no chert couple and indeed scarcely any couple at all. The friable Gaptank 55 didn't remain pebbles very long. Coll. 8/9/57/5- in the swdeterminant windgap- about 25' downon SE side. ls, brown gray, very conglomeratic, 1/2" to 1" chert + ls pebbles. This seems to be within the wrecamp interval. I would guess judging from the beds above & below, this is near bed 15 Section 23. 2) Section 28- SW wind gap; Degout NH. Covered below - approximately 20' (?) above angular unconformity with Gaptank. 1) ls, brownish gray weathering, very conglomeratic see note about Coll. 8/9/57/5- 12' 2) Sandstone and shales; light brown, friable, 1/4" to 1/2" bedding; 25' 3) Calcarenite, and grayish brown; coarse sand sizes; a few foot-sized features & other organic frags. 4' ; 6" beds
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(26) 8/10/57 Black Peak [king's]?? sect. 28 Bk Peak on S side see King (930), p. 121 who examined My notes are made from the north side 8/10/57/1 - ls float from ocean maximum peak 8/10/57/2 - from very dark gray feld l.s. at top g f low lying ridge just at heart of key Black Pk X-section xx Loc. 57. Loc. 60. NW 8/10/57/2 8/10/57/1 8/10/57/3 gap tank's? covered thrust fault John Miner says this is Band of Taylorsville in age, any 29/57 (5) (4) (3) (2) (1) 1) Ls, most dark gray, some mottled pattern in the strata; fossils coarse, a few coral + crink columns; about 90'; Coll. 8/10/57/1 2) Covered, 40'; Instream cut, some badly shattered & fractured "shale" which is mostly green siltstone and green brown sandstones (weathering red brown). These seem to be similar in lithology to parts of the Haywood and parts of the gap tank near August Mt. (27) 3) Shales, black, organic, with some vitre. 1/8" to 1/4" bedding; a few sandy zones or beds; 60'; the sandy zones weather red brown. Coll. 8/10/57/3 (Thrown out) 4) Ls, very dark gray to black limestone, some bedding surfaces are silicified with a brownish colored material; -beds 1"- to 2"; 40' Coll. 8/10/57/2 5) Covered above. The color and general lithology accords me of the Heeco origin from Woodruff's area in the Eagle Mts. These shales are more organic, but the aggregate % are roughly similar. The Black Peak area has been faulted and deitated badly so that while these figures are only approximate, I would judge these are minimum figures rather than maximum. The little fossils from 8/10/57/2 are like some I've seen before. They are larger than the Schizostella's and appear to be Graptolites from field experience. The rock facies here seem to be quite strange for this part of the west Texas region.
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(38) 'ell. 8/16/57/11 -- from 10' interval. limey beds below crossed Uddistics Sandstone Horizon in 2nd Section of Black Eg Geol Canyon. The lower part of the cyclic beds are exposed to the easty Geological Canyon about like the #21s mile. There seems to be similar stricture (at least for this area) as the #2 beds taken suddenly beneath the cyclic beds. The shale interval here is a light gray and less shaly silty. This of these cyclic calcareous sand are present. The bulk of the material is a coarse rubble and includes darkgray ls pebbles 2-3" diams and glass mattled occaulty appearance on all. I don't see how all of the stricture here can be attributed to dragging over buried reefs although that is still within possibility. The explanation goa SW-NE structure trend as appealing. These beds seem to be faulted in the 15 units and flows into shale but no definite such structures were observed. 36 8/17/57 Section 29: Moore Ranch; 200gds east of last Wolffs #1s exposure 1) Covered, probably siltstone and shales, base grain under alluvions 2) Sandstone, light green gray to brownish orange, vs grain quartz for most part; occasional conglomeratic beds. 4' 3) LS, green gray, fragmental calcite, these are in a limey shale matrix and are similar to the #3 bed section 23. 27' 4) Covered, 11' (same as #3 m stream cut) (but considerably more 8/17/57/4) 5) Sandstone, weather orange-brown; fresh is green gray; vs to fine grain gray; 1 1/2' 6) Covered, 15' 7) Calcarenite; light gray to brown gray weathering. up to 6" cobbley, very small amounts of chert. (8/17/57/1- pebbles) 15' to top of ridge, this unit forms dip slope here. (39)
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40 50yds westy section 29; an a stream cut a 9' limestone underlies the Calcarudite. Short seems the calcarudite has been deposited on a eroded surface of the ls. 6) A, ls, [illegible] light pink; massive, weathered surface has a tingly brownish orange 0' to 9' 8/17/57/3 6) B, ls, light gray, some yellows; calcarenite 6"-8" beds, Coel. 8/17/57/2; 0'-20' These 2 units overlie 6) and underlye 7) w Top of Ridge About 4' of straight relief I think the Calcarudite is wave reworked material, not much transporty the Chertsgoes, but most of the ls have probably been reworked nearly endsee. Beds 6A and 6B weather into horizontal wavvy "bedding" lines; these I have call debris beds off reef highs and I suppose that would hold true too. I believe the Hess Cycle has been reported on the Lower beds westward to the Brooks Ranch-explains Lackysg The beds above the Hess Calcarudite are -shaly & silty for a considerable distance upwards. They then begin to alternate in some sort of cyclic deposition. 4 to 6 cycles of Hesse cycle before the ridge forming dolostone (41s) unit is reached. The Hess Cycle usually has a red shale I suppose you either see or at top in the eastern portion of Moore Ranch - In fact in the middle-western exposures also. The first canyon east of the ranch road thru the Wolfcanyon, has 4 or 5 Hess Cycles separated by red shale and buff sandstones. The Hess is about '75' to 80' thick here. The Wolfcanyon, thicker here and the gapland ls (#5?) is well exposed. The size of the gapland & Wolfcanyn increases. 41
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(52) 37 [seep. 124-127, 169] 8/20/57 (37) Section 32, west side x Canyon (Road to high pasture) dgp N/W 23° Covered below 1) Limestone, dark gray with layer and irregular patching orange-brown sandstone. Brack shell flags 1' to 2' beds; 14'. 8/20/57/1 (= #51s on Gap tank g King) ? 2) Covered, 37'; mostly greenish gray shale. Coll. 8/20/57/9 3) Sandstone, orange-brown weathering; 8" to 1' thick; well sorted, up to f.f. sizes, well cemented (Fe, &? silica?) ; 1½' 4) Covered, 52', a few feet g-shale partly effaced at base. 5) Calcarenite, dark limestone cobbles up to 4" in diam, reddish to orange-brown sand matrix well cemented; at least 4' thick, base is covered under #1. 8/20/57/2 Many fissures in matrix. 6) Shale, green to gray, 0'-2' very centricular 7) LS; dark gray, shell hack, furculinae common in thinner beds (3"-6") near base; brachs + widesommon in up part ; 11' (8/20/57/3) 8) Covered, 58', mostly shales than beds of limestone in lower 10'. 19 bed has slumped down to cover this interval. Variable in thickness + lithology. 9) LS, v. light gray to nearly white; organic fragmental; many brachiopod shells + Crinoid stems; some furculinae; Coll. 8/20/57/4 near base. Massive beds, singular weathering lines visible to loading. 5' to 10' beds; 43'; Coll. 8/20/57/15- in top bed. 10) Calcarenite, light yellowish gray; very vitty near base, became v.s. s.s. size at top; 11', coarse bedding, poorly sorted - Cooke like stream deposits rather than marine action. Coll. 8/20/57/6
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(66) 8/22/57 - (Dillinger, Trout & Co. noted) 8/22/57/1 - from Here Coule, near Gapland area. - Pebble is an Concremitry Coule series. N of the point Highway passes through "E Caplak 1s. 8/22/57/2 - Barite runs 200m on plain, 45-30 miles Ee, "Hill Allen", Tex. The conglomerate is a large coarse high extending nearly SSW across the intervening Ranch just S of their Ranch. Inside and outside of this canyon 1 1/2 to 2 miles WSW for Brooks Ranch (see). The thinning of the clastic interval in the canyon and the gradual increasing dip of older rocks on the Here Ranch suggest there was an active high during upper Pliocene time through western Texas. It seems to have had little effect on the Here Ranch itself but did it. On Gapland conglomerate there is, excepts in a sandy facies on the south. (15) 8/23/57 [See p. 104 & 126] Sections 37 - 1/2 mile NE of Here Ranch Nourse - Level sheet dip 100 1) Agamous inclusion, rhythmic like. 2) Covered, 5' 3) Calcareudite, E-5.5 foudders, quantity to clc. pebble up to 1" creamy orange brown sand matrix. 4' beds; 25' 4) Covered, 35', probably conglomerate #3. 5) Calcarudite; pebbles & cobbleys bl., well rounded, light yellow sand matrix. Stone chert & quartzite (up to 25%). 8/23/57/1 base 8/23/57/2 40' np. total - 49' 6) Limestone, calcareous, some limestone pebbles but most pebbles are 1/2" chert. This is gradational with # below in the last 15' of that (15') unit. This unit (#6) become progressively less conglomeratic upwards. 1'-3' beds 8/23/57/3; 11' above base. 8/23/57/4; 32' above base- total 32'
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86 The circulation Leonard Mt. apparently with the same as the formation below? Need Beach. The Leonard Mt. section is correlated by a fault just west of 1st Sidgey. This fault apparently bounds the New West on the NW. 7/23/58/3 - Beach + Jurassic horizons, top of northernmost knob on Leonard Mts. (Upper 3' of Knob) 7/23/58/4 - about 50' to Cn (3) in saddle to S of beach [see p.65] 7/23/58/5 - Collection from upper portion Gaptank Side SE facing Leonard Mt. - This is about 30 yards SW of section 36. Jim Phillips collected from lower portion of section 36 (see page 45). Collecting 7/23/58/6 7/23/58/7 - (see page 65) upper portion of gaptank SE flank Leonard Mt. 87 loc. 0317 The folded & faulted rocks at the base of the SE facing Leonard Mt have this sequence roughly: 240' orange-brown, gritty sandstone with interbedded light gray shale at least 100' total dark brown to black chert, 3" to 6" beds with thin shale interbeds. 60-70' light gray siltstone 6" to 2" with thin clayey partings. Calcite veinlets apparently - limestone chert bands near top 50m of beds 100' or more Using these beds have fossils, except for locality at 8/24/57/2 (and 7/23/58/1). This one locality has a thin 2' foot zone with Jurassic and marine fauna and is only found at this one locality. This overlies the upper unit shown above, but has about 10' of similar course brown sandstone above, but perhaps folded. The circulation of the lower unit is similar to the 'Bolonian just south of Marathon, the chert is similar in color to the Maravillas, but the upper orange- brown interbeds similar to some beds on the eastern side of Leonard Mtn. as seen in the "Jawors"
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98 The second comes by King on the east face of Indian Hill, very generally light gray sandstone in most its appearances. Swy Sec 36, the lower section is exposed on anticline. The core of the anticline has orange brown sandstone and interbedded light gray shales similar to the upper sequence on the north west face. The similarity of these lithology suggests a correlation but as yet based on fossils. The lower conglomerate, Kewanee mountains is primarily redish gray cobbles beds and last (see p. 87) and shales and intermixture of pebbles. The upper conglomerate is darker light to and gray to cobbles, and a minor amount of chert pebbles and infrequent l.a.d's. Core the holes from the ls water level above the second Cough cut down to Dolanite member. The 2nd valley south of this collection is underlain by exposed shale which apparently follows a fault of distance 75 key digression crossing the N. side. 18 7/24/58/ Sect. 41 - east New Horst at eastern most tip of Intrusion (Dacite) 1) Intrusion - 2) Shale, gray in 2' intervals and 3"-6" silt? mixed with beds (Crownweathering) - all fairly metamorphized - 78' some plant frags - scratches? 3) Calcmandite, massive, 4"-5" cobbles of light gray to and light gray bs., sh chert pebbles 3' 4) Shale, midgray, badly metamorphosed 23' 5) Calcamudite, mid to light gray bs. cobbles, 3"+; give chert (bk) & mud quartzite brown pebbles. 56' (3' lost) 6) Calcmandite with interbedded shale; the cobbles are fine pebbles, some s colored commonly whole body covered, 4 or 5 layers. 182' thick total 121'
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110 4) Dolostone, fine dark grey, bummer washing in 6" to 1' coal - 60' 31 Ice, light gray, fine grain large shell coal 8/2/58/4 from anthill at top of gapper ls - 30 yds NW of highest fault scar ridge. contains a low sliver fracture - S. August? The lower complex order must be beautifully printed on the West side of the Hess Forest. There the large led strikes N80E the same as the overlying "vandy" dolost ls, but they dip about 30° to the NW whereas the ls above dips only 7°. There are also about 20° initial dips on these beds. 21 8/2/58/5 - shaley interval, few specimens on slope, 208 yards NW of saddle between 2 major clefts in Hess Forest. 8/2/58/4 - a jibble from lower angles about 70' above the main saddle between 2 major ridges (Hess Forest) which is clean. Contains 2 types. 111 8/3/58 Doug Out Mt. 1/4 mile SW of section 24 the "Hess" ledge and the folded faulted belt meet on top of one anticline and the "vandygang" anticline is entirely missing or if present is represented by 5-6' of shale beds. Coll. 8/3/58/1 - few grains from shale slope beneath folded "gapper ls" bed at above locality. Duration Total? Loc 63 Coll. 8/3/58/2 - anthill in covered interval between east "gapper ls" bed and base of Hess ledge - There are 8-6, coarse in "vandygang" (small schistys...) 14 Coll. 8/3/58/3 - loose specimens at the base or a few feet up in "Hess" ledge near at the first locality (large schistys). Several small faults can be seen cutting the "Hess" Ledge in this 1/4 mile. Loc. 85 Coll. 8/3/58/4 about 75 yds east of Coll. 8/3/58/1 - Hisses from a tightly folded anticline - above N53E, NS look 80° west dip, cut line... 20' wide. This section.
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{ "text": "159\n44 Covered, probably light gray pelite 42'\n each 8/20/59/4/\n43 Sandstone, deep orange brown weathering,\n wf.ss., wf.schist, wf.lamination,\n wrinkled 1/2'\n42 Sandstone, light green gray, cragland\n crossbedded, centric or rectilineal shells\n varicolored to redish green; cones\n are irregular, concave top.\n Haywood. 4'408'beds, 157'\n41 Covered - 34', probably like above\n40 Sandstone, lightgray, crossbedded,\n 15'\n39 Covered 85'\n38 Sandstone, light green to light brown\n gray, X's, 6' l.cubes. 18'\n37 Shale, red 6'\n30 Calcarudite, 1/2 to 6\" grains and white\n with matrix - ? inclusions in pellets.\n Coll. 8/20/59/3 - 23'\n35 Calcarudite, and gray, some beds # is\n pelitic to cemented mudstone - 15'\n34 Covered, probably red shale and\n and some is calcite 28'\n33 Calcarudite, muddy gray. Calcic\n 6'\n30 Covered 25'\n(31) Conglomerate, coarse, to fine in grading\n from sandstone? (brown) - 19'\n(32) Repeat of above 75'\n(29) Covered, 34'\n28 Conglomerate 13' ( \n \n \n \n \n \n\n \n \n \n \n \n\n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n\n\n \n [TRANSCRIPTION_TRUNCATED_DUE_TO_LOOP]
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154 10 upper part Sept. 2, 1958 Iron Mt. Ranch Sect. 42 - measured up cliff to west of Iron Mt at a point due south of southern most portion Iron Mt. Lower slope covered by Terra Rude. 1) Congr., Ls + chert pebbles up to 8" diam, 5' to 10' beds, pebble base lithics and possibly schurgerian (kaussanda) in them. 22' 2) Ls, med gray weathering, thin bedding (1" to 1'), even bedding surfaces, solid fossils common on bedding planes. a few brachi, hyzoans, graminus but mostly crinoid columnals - a frag. ls. sand-wellcome Coll. 9/2/58/1 55' 3) Ls. with increasing % of pebbles + calcite. still much like 2 except 1'-3' beds. Coll. 9/2/58/2 - loose on slope at base of outcrop, 2" diam. crinoid columnals are common in this interval, fine gravel size dominant, a few 2-3" pebbles. Coll. 9/2/58/3 upper 10' 78' 4) Ls congcr. 10" to 12" diam., with columnal base, 6" to 8" crinoid columnals - 12' ("Hess Ridge"?) 5) Dolostone - light tan weathering, middle of gorge?, massive, 3 55' grades laterally into fossil chalk, (silicified) gaunt at top of ridge, general NNE strike, vertical jointed with calcite - rocks or other volcanic? same lithology but beds don't match too well. above fossil? 6) Ls: chert-chalk, weather saccharoidal and dolomitic - like 5) 15' top of gorge 7) Silicified, orange brown, with heavy calcite bands (2"-4"), makes back slope? - This is Leonard! Dip 14° to the NW & SW This upper Ls. can be traced into the cliffs behind Decies double windmill (Sect. 22) Kings 13th Leamolds penches out NE of Sullivan Rd at Rte. 6 (Second ridge from Wg Road)
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160 wolfcamp dip NW 7° yellow-orange ironstained 4) shale, light brown, vitreous, and calcareous, 6" with numerous juruline (Coll. 9/3/58/1 near base;) — 16' 5) Covered, probably like 4 — 35' (a few scattered float samples suggest same jurulined types) 6) Conglomerate, many chert & co. pebbles < 3" diam, brown sandstone matrix with jurulinoids (S.I. means) — 8' 7) Covered, probably shale, & as interbedded 100' ± coll 9/3/58/2 = float 8) Ls., in large part organic peay, maybe [25] 9) part has cobbles in it. — ~~10~~ 10) Covered, Ls+shale probably 40' [10] Dolostone, brown weathered — 40 — overlain by Leonard Shales. page 148. This interval 6-9 apparently thins to the E along the face of Leonard Mt. The massive conglomerate there is represented in section 44 by 8' (bed 6) but the shales are largely a lateral equivalent of that congo. Shells in the eastern point of Leonard Mt. just above the congo are both in large part cross-lidded and then thinned W to sect 44, thus beds 7+8 are its lateral equivalent. The massive dolostone thins toward sect 44 by layers of cherty lidded Ls on its upper surface. Just west of sect 44, the dolostone is nearly completely missing. The northern slope, the hill west of Iron Mt., like most of the rest of the hill is covered by talus blocks. The first beds exposed below the LS sequence are folded Gay tanks containing very small triticles. There is apparently a trough or syncline of Niobraran age rocks in the triangle between SE Leonard Mt, nw Iron Mt., and again due west of the southern tip of Smeall.
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164 14, mark, light green gray, little cross bedding a few scattered fusulinids, sandy 4' 13 Shale, reddish brown, very silty, and thin algae. (8"'s) 28' 12 ls. mid gray, med grained calcareous of fossil frags., bedding indistinct, many uneven solution pseudo bedding however, weathers to a sharp pitted surface near top, lower bed. 90% or more crinoid frags. 22' 11 ls., much like that above except an beds 4"-8", this apparent permits carer erosion and a break in slope at this interval 8' 10 ls., light gray, massive beds 2'-6', a calcudite matrix with large intact crinoid stem pieces. 21' 9 Covered, probably a muddy zone of ls 26' 8 ls., light gray, calcaduite with some small fossil frags. 5' 7 Covered - stream gully, probably amarly interval 12' - ls. - old 6 of sect 14 These upper ls occupy a syncline in the lower end of the "Horse" range. Evidences to the east and the total effect suggests an over lap of these ls bids towards the west and apparently also towards the east (the erosion by pre Horse regions however more severe eastward). The "Horse" range probably still thins over these beds because of a former topographic high. The Leonard forms a continuous sequence of massive calcadites in its upper portion on the Brooks Ranch. At all places I took dip and strike along O Brooks Northern cross camp, the strike was within 5° of being East west. The dips become gentler to the north, high point-5 northward and suggest a slight anticlinal flexure toward the east. (Check to see if Morris dips on any strata)