Field Notebook: WY 1955a

Waage, Karl

1955

Yale Peabody Museum of Natural History

Original Source

Source Material:
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org

paleontology stratigraphy fossils Cretaceous Western Interior Seaway ammonoids

Document Pages

154 Pages

1955 3 IK-1 doc.466 UNITED STATES DEPARTMENT OF THE INTERIOR DI-6 APPROVED DECEMBER 1941

K.M.Wagge 1955 - Notebook #3 6908331 doc.4 66 Inyan Kara study Crook Co. Locality W-1, pztizl skull Cr. section ____________ 1 Locality W-2, '' '' '' '' '' '' ____________ 3 Locality W-3 Gov't Canyon section (part) ____________ 4 [7427] Locality W-1, Skull Cr into Fell River top ____________ 13 Locality W-3 Gov't Canyon section (cont.) ____________ 16 Locality W-4 Fell River-S.C. contact zone ____________ 24 Locality W-2 continuation S.C. section ____________ 25 Locality W-2 Top Fell River ____________ 28 Resume on Gov't Canyon area ____________ 30 Locality W-5, Skull Cr. NW Newitzzen ____________ 31 [7427] Locality W-6, Mount butte section ____________ [7427] 37 [illegible] Locality W-7, Aladdin area, Lkt.& F.R. ____________ 43 Locality W-8, Aladdin area - Lak-Morrison ____________ 48 Locality W-9, Aladdin area - Lzk-(Four Rivers Rd+11)-54 Locality W-10, Arch Creek - Lzk - F.R. ____________ -59 Locality W-11, Inyan Kara Cr.#1, Redwater to F.R. - 72 [7427] Notes on Inyan Kara Cr.#2 (Robinson Theobald Ser.) - 75 W-12 Continued IK NBK #2 v measured section prepared o no section here 1. Lacks locality. 2. " faunal list 3.

Partial section base Skull Cr or top Fell River, Devils Tower i SE Quad Locality W-1 - stream cuts W. of gate (3rd) on rd to Gout Canyon, 1 mile north turnoff from County Rd to Alzocle, cent. W 1/2 SW 1/4, sec 7, T.56 N, R.84 W Measuring up from a rusty stained siltstone under bentonite. 0.8 Siltstone, clayey, lenticular, irreg. bedded, wezths rusty brn, grades laterally (a rests on) to black shale locally. 1.8 Bentonite, yellow gray in b>52 10.3, green in upper 0.6 rem<under variable, Fe brown to olive br. 2.0 Shale, blocky to subconch on fresh surf, black, mottled with grey, slicked, finely silty. Upper 1/5+ has lenses + in turbeds white silt. wezths YB, Upper 0.5+ loc. Fe impreg, conc. silt with shaly break and bedding surfaces with shot-sized CaCO3 rosettes 1

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12.0 Shale, gray to light gray, fairly hard, silty with some interbeds silt in lower 5 feet. Weathered shaly to blocky and contains concretions of same material as matrix. About 5.0 from top are local silt conc. with fish and wood remains and black chert. Range in size from 4 x 1' to small head size. Unweathered shale of upper 5' is black, weather blue gray, plastic. (Spot sample #1, just over cone zone.) 0.7 Siltstone, locally conc. to stone clayey, hard, weather rusty brown. 10.0+ Shale, hard, blocky weather shaly similar to that below. Measurement to grass roots (Spot sample #2 of lower 1.0)

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Locality W-2. Hard levelling from top of Fell River to base of bentonite unit in preceding section at Loc. W-1, 9'6 of which lower 5', at least is ok gray to black shale. Shale here rests on interbedd, thinly to interturb. SS + sandy sh. Up slope bone bed horizon is prominent, small + large cones, with chert + fish remains and, locally, bones of reptile (see sample#1) in sec. p. 25) Locality is about 1 1/4 miles N. of W-1 along same road. Loc1 bedlands in Skull Creek visible across gulch in top Fell River on W. side road. Devils Tower - 1 SE Qvzd., cent, W 1/4 SW 1/4, sec. 6, T56N, R.64 W, and due west into R Sec. 1, R65W,

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Government Guyon Section. Part 1. From base cylte ss down into red clzystones Base cylte ss 3.4 Clzystone, light greenish gray, bentonitic in upper foot, grades downward thru yellowish tan clystone to light graygreen clystone with red mottling. 9.0 Clzystone, hard red, becoming silty downward. Hue changes from average- or brick-red to deep red. 20.0 Clzystone, silty, red, grading to clayey siltstone, purplish red below. Locally at top are lenticular bodies of white porcellanita up to 1.0 long 0.4 high. Beszl 4' brownish, clayey siltstone with slicked surfaces. Some non calc. nodules 4

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scheduled in lower part 1.0+ claystone, silty, green. On up gully toward cliffs marked changes take place in color in this part of section, below the upper greenish clay. Also the overlying ss thins toward the cliffs. 4 Part 2. Measuring up from base ss at 16. locality of Part 1. 1.5 16.0+ Syudstone, clayey sandstone, and sandy claystone. Chiefly soft, friably weathering to whitish slopes. Base) 1.5 locally coarse, conglomeratic sandstone, weathers brown to tan and slubby. Locally other indurated lenses within body. About 4' from top are thin beds sandstone locally with bedded chert, in thin layers. Top of sand gradational into sandy claystone above. Whole is white to gray white, some yellow stain. 5,

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Thruout this interval polished chert pebbles weathering out. From 1/2" up to 6" long chert, scehewed. Tend to occur in numbers locally than sparse. Seen in place in both claystone and sandstone. From here up handpicking on weathered crust 16.0 Claystone gray to dark gray some carb fuzys but hard, Some Fe spots on crust. 7,0 Crossly slumped claystone probably bentonitic?, gray. Some Fe stone float, some polished pebbles. 7,0+ Silty clstn, hard + some siltstone. On top Carbonaceous claystone cap Part 3. Starting in red beds base of pinnacle, at bottom of draw. 15,0-? Siltstone, loc. clayey, variegated pinkish and green, Irreg seems porcellenite-like material about 8' from top.

8.8 3.4 12.2 2.9 9.3

Upper 2+ feet hard silty Claystone, red and gray. 9.5 Claystone, green, some gray mottling in lower part. Bedtonitic from about 2:15 above base for 30 or more ft Becomes lighter + siltier at top and grades thru sandy claystone to unit above. 3.0 Claystone, sandy, light gray to gray white with greencast cast locally. 3.4 Sandstone, fine-gr, clayey friable, some yellow- weather., hard layers. about 1' from top which locally contain thin irreg. layers of chert. (this unit thickens to SW) Locally contains polished chert pebbles. 2.2 Claystone, sandy, minor clacey sandstone, gray white, some yellow streaks.. May also be.

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polished pebbles here but none seen in place in immediate vicinity 6.0+ Clay + clsty, gray to dark gray, lower 2'+ light gray, with scattered spotty cracks weather, hard stony. Plastic mass under crust no good fresh stuff seen locally has yellow gyp cones, weathering out. Forms bench below lumpy slope of next unit. 10.6 Claystone, dark gray to gray underlies, lumpy crust on slope. Upper part (? ft) shaly. Scattered chkb. flecs 5.0 Claystone, tough, hard dk g, gray at base becoming light gray upward. Separated from interval below by change from hard, clsty to soft shale. Lower 3'ft dk-gray, upper light gray

0.5 Siltstone, locally massive lodge, weathers with greenish cast, has local Fe brown stained masses. 2.41 Claystone, tough, light gray, with greenish cast 3.5 Shale, dk gray to black locally carb. Weathers plastic - 5.5 Claystone, soft, locally shaly, dk gray to gray in lower foot, becoming light gray loc. greenish cast, hard, tough finely silky clsta. which loc. stained yellow and on cracks & slip surfaces May be some pink mottling inherent in upper foot. Local silty zone 2.0 to 2.5t above base 1.4 Claystone, hard, as below with mottled green on light purple 3.6 Claystone hard, as below gray mottled with green 9

becoming mottled with brick- red in upper foot; lower foot locally very silty to crazy siltstone 6,6 Claystone, hzd, as below, chiefly brick-to orange-red with little greenish and purplish mottling. 3,0 Claystone, hzd, as below light greenish grey with some Fe Brun & Brick red stain in lower half, purple mottling & stain in upper, 2,4 Claystone, soft, plastic, chiefly purple in lower part grading to green-grey with purple mottling above. 3,0 Claystone, hzd, flinty, grey, speckled, may be fragmental. (Sample 1.) silty becoming very dry top. Yellow br stain on fractures. Local orange calc red conc masses of local flesh peppered Fe spots. Some 10

Note: elsewhere in Gov't Crayon Sharper contact, generally with coal or coaly shale on redclay clay, or with a siltstone between. local siltst -> -> contact [illegible] cod or coaly sh roaclat cley or siltstone study distri Fe specs red vev. bed Locally, as in section below

1.0+ Sandstone, soft, fine grained argillaceous, locally harder less clayey grades into unit above, gray-white. Some timely distinct, cark? gives it purplish streaks locally. 4.4 Siltstone (locally sandy) clayey, to silty gravel clstu; light gray, cark rootlets? weathering yellowish white. Containing irreg elongate branching Fe conc masses & round balls of it, chiefly in upper 1/2. L2hote <-> Fall River 1.3 Siltstone, hard, dark gray grading up to clt gray silty clstu, full of cark remains, mostly carbonized, locally basal hard siltst thickens cutting channel- like into unit below. 0.4+ Lignitic shale, varies locally in thickness but rarely more than 0.5. 11

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3.2± sandstone, fine gr., wezth. light yellowish gray, czrb frzgs throught, loc silty. Lower 1 to 2ft broken by interbedds grzy clayey siltstone, czrb frzgs. 1.4 Shzle, grzy, finely silt, to szdm few czrb flecks in lower part. (Sample 2) Hvd. 0.3 Concretionary Fe bed, hvd, 4.6 Silt shzle, znd some (2mmzted silt, latter chiefly Fe impreg. 0.2 Fe zone 1.1 from base znd same thinner beds. Fairly persistent one 1.0 from top. Most wormikd. Substr is gray to lito grzy clayey. 1.6 Inter(2mm)ted - fine gr ss + siltstone with Fe impreg, ledges 0.1 to 0.3 thick, 2 of these loczly prominent. This section continued on p. 16 12

Locality W-1, east side of road in claw. Exposure of Skull Cr.-F,R, contact. Measuring down Grass roots. 8,7 Shale, black, clay, weathers gray to light tan-gray. Bgsz! 0.5 is sandy has plant frags grades to ss. 4/10 Sandstone, fine-gr, irreg. to platy bedded, thin-bedded, with partings and thin beds of silty->sandy gray shale. Weathers buff to yellow brown. Upper layers commonly ripple-mkd, interference type common. Others worm tracked locally. Local Fe impreg. results in weath out thin worm-mkd slabs. SS/SH varies 1:2. 1.0 Clay or silty, gray to ok gray, plastic, some slicks, finely silty, becoming silty at base and 13

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grading to clayey siltstone 0.4 Siltstone, tough, clayey zone of Fe-stained, orange with red flecks and mottling. Gradational with unit below (+above?) 4.2 Sandstone, and sandy claystone. Highly visible zone character- ized by Fe accumulation in concretionary verniform masses, looks like sinter loc., also impregnates + coats some of sandsst. beds. Unit generally light gray clayey sandstone in upper 2, at which varies laterally to gray silty to sandy clay. This part has local lenses SS, and some pinkish Fe discoloration. Below this concretionary Fe most common, section sandier with interbeds of massive fine gr. SS, + sandy gray sh, locally Fe stained. This lower part markedly thin bedded to learn, compared with upper. 14

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Laterally some of ss at base merges with unit below. 4.0-? Sandstone, in massive beds up to 3.0, some thin beds + shale plugs. Base obscured by wash,

3,3 1,5 1,8 117 1,7 6,1 3,3 28

Gov't Canyon section cont from p. 12 1, 1 Siltstone, fine-gr, buff worth, Cross laminated, ripple marked. soft zone in upper 0.2. 7.0 Siltstone, fine-gr, buff worth 1zm to cross 1zm, thin bedded. [illegible] 1-2 ft fairly good solid ledge, rest shelves, Some interbedded sandy sh in upper 1.5. 6.1 Shale with some silt inter beds. Breakdown 2.8 Shale, gray to dk-gray, very silty in lower foot; in upper 0.6 (Sample 3/2) 1.8 Siltst. + shly silt, silt beds sandy up to 0.4 1, 0 Gray, silty sh. 0.5 Pink to reddish purple sh becoming sandy at base. 3.4 Siltstone and silty claystone. silty gray claystone with siltst. interbeds in lower 0.5 grading to siltstone 16

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with thin interbedds clayey siltstone. Silt lagers Fe stained or impreg. Conc. Fe ledge 0.1+ begins 1.0 from top. Above this interbedds fine gr. SS come in. 3.6 Sandsfone, med.gr. chiefly massive x-lowry buff wezth. Lower 2.0 Breach to upper lower 1.5 1.5 is banded or even- 1.5. bbeded, "worm worked" Massiva baddeny pizues, znd Fe part has imprec so that it long narow weatheres bzueld darker tubes from burn than massive upper top surtace pwt. On top is worm frocked commuialy to base Fe red crust. 1.1. Sndsfone, fine to med.gr, completely "worm-worked" wezths crumbly light buff to pinkish grey'. 0.4-0.5 Szndstone, hard, finer x-1zm. bed. 0.5 Shzle, Szudly, gray at top reddish purple basal 9.37+ and 17

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thin yellowish zone at base. 0.8 Siltstone, gray, sandy, shezy to massive locally, chub flecks. Weeths gray white to light gray 2.0 Sandstone, fine gr, silty, irreg bedded frizzle, light-buff weeth., locally cleay. Hzs Fe impreg zones yellow to Fe brn, these crumbly generally "worm-worked" Much worm working locally. 2.5 Sandstone, fine-gr, massive, bssz) 0.9 Fe impreg. weeths Fe brown, remainder weather yellowish gray 4.5 Sandstone, fine-gr, and met.gr. and lenuzted (x/12m.) to thin-bedded. Bedding irreg. some ripples, worm-mkd surfaces locally Some sandy shele lenuzate in upper part 0.9 Interlenuated fine gr ss and sandy dk gray shele chvb. flecks. Grades laterally into thin-bedded ss as below. 18

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1.3 Sandstone, fine, qr., fmmated. massive bed broken in Koler- ledge by jointing, weathes yellow gray. Thins out locally. Some of its bedding planes worm tracked, vaguely laminated. 2.1 Sandstone, fine-, loc med qr irreg., thin bedded with upper 0.5 irreg laminated, white weathering. Lower + beds 0.5 has some sharp ptns. Similar to unit beneath massive ss below. Considerable let. uvriztion in shale content. Worm markings on bedding planes. 5.7 Irreg. interlaminated shaly siltsht. silty sh, scattered silky layers. Hard, weaths to crumblly gray-white face in reentrant under ledge above shely parts dk-gray, silt light brownish gray. Upper 1.4 has thin silt beds that weath light F- brown & is generally more silty. 19

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(#3) 10.6 Locally more shaly in middle part. On cliff face this interval commonly weathers with crude vertical columnar structure. Sandstone, fine-to medium-gr. in thin beds, some massive some obviously x-laminated. Silty zones and many frizble worm-worked zones result in shaly wash. Has 3 or 4 massive beds about 1' thick and beds in basal 1.5 to 2.0 Fe impregnated. Bedding surfaces full of "worm markings", ripples, Upper 1.1 finely lam loc. worths white, is in platy slope at top locally. Top surface worm tracked by bri crust. 1.0 Siltstone, grey, clayey with carb flecs, locally silty sh. 2.2 Interbedded clayey siltstone +silty clay, grey and lavender to pink, and sandstone. Letter in thin beds, 0.3 one, two, finer at base. SS is lenticular, x lam. Also some worms This interval completed top p.22 by mistake 20

(#4) 15.0 Sandstone, fine- to mod- grained, upper 7 to 10' it is massive x-lam, weathers buff with much local brick-red & o-red +orange stain. Lower 8-5't even bedded to thin bedded in beds 0.5 to 2.0, locally with some shely ss pts. Not much bedding plane mkr in contrast to other sands. 3.1 Shale, carbonaceous, pzpwr sh in upper foot grading to slicked carb loc, shely clay with some silt. (bzzl 0.5 is gray red-stained) to pink clay sh crab flocks; silty. 0.7 Shzly, light gray silty with thin bed fo impreg, fincl 1/2m ss at top. This has worm tracks & borings. 2.91 Shale, dk gray to black. at base to gray et top, becoming progressively more silty upward. Silt occurs interlam. with shale. 21

This belongs bottom of page 20. worked Fe impreg, silty zones, Much worm tracking + working, Interval characterized by interbeds of pink + light gray clayey silt, 3.4. Interbedded grey shale and Siltstone, Latter as separate thin beds + also interlim with shale. 0.6 Ledge of sideritic festone weatheres purple brn + bru. 0.7 Sandstone, fine, gr, white in thin beds with interbeds gray shale. 8.0 Shaley, gray, silty, weatheres brownish with scattered thin interbeds siltstone, Upper 2.0 is saltier with many siltst. + fine ss interbeds. 5 to 12 feet (locally 12 ft.) Sandstone, chiefly massive, frizzble some thinly bedded, local platy, silty or sandy sh zones in lower part with some Festone slabby layers, Above this nothing can get fresh surface 22

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on but soft zone with odd verwicker Festone mzzssg in directly above ss. at 2' from solid top, in this 2' interval move ss in thin beds and Festone Above this for 3' wash but éza dig out thinly interbedded ss + gray shale. 23

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Locality W-4. Fall River - Skull Cr. contact zone. Red shale zone comes in along strike in position of upper interbedded SS and shale zone of #5 Fall River. Lower massive part #5 forms exposed dip slope. Locally color of red Sh changes to dk gray. To north the silty zone partially replaced by hard beds massive SS like those below. 91010 ft to bentonite [illegible] shale Top obscured. platy ss lb, sh. red + grey shale silty zone exposed surface massive beds 24

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Locality W-2 Continuing section of Skull Creek up from the base of the bentonite, which sits on black shale. 1.6 Bentonite 1.8 Shale, black with 0.4+ silt + Fe conc. silt at top, silt weath- white platy, Fe in blue black- weath to Fe brn weath with some sideritic masses. 9.0 Shale, dk gray to black weaths gray. Contains, from 1 to 5 feet from top, two types of concs with (Sample #1 ->) fish and reptile remains. At about 5' below top first concs appear, usually large 2-4' diam, Fe brn to purple black, with some chert nodules and fish remains. Loc. reptile bones. Above this mostly small elongate egg- shaped concs with white patina bluish gray rind + chert cores with fish fragments. At top is siltstone zone 0.2-0.4 locally with some brown siderite concs; generally festined. 25

10/6 15 10/6 32 74

9.0± Shale, chiefly dark gray to bl[ckly, weathers light gray at base, brownish gray above. Becomes silty in upper 2 or 3 ft and upper 0.6± is fastened siltstone and [illegible] siltstone, soft. Interval includes scattered siderite concretions, some bone-bearing. One horizon about 1.0± above base in black clay shale has reptile bones and teeth locally, (Sample-2) Above this some scattered bone in shale (Sample-3), horizon ind- definite, may be float from interval next above. 13.8 Shale, gray to clk gray clay sh, locally minor silty zones. At top is 0.3 to 0.5 Fastened siltstone which caps local prominence. At or just above base are scattered blue-black-weather. concs. Scattered reptile bones, some in sandy conc. masses in float of lower part this unit. In fresh cut up stream to south this unit black shale, clay below becoming siltier at top 26

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11.6 Shzle, dark gray to black, becom- ing finely silty in upper part, and somewhat less plastic than that in lower 3 or 4 feet. About 3' from base begins to weather out in chips + trees begin. At top is ferruginous silt, locally concretion avg. Fe 12ppm, 0.12-0.5 upper 3.0 shzle scidcritic + yellow offlor. 8,5 Shzle, black, finely silty to little silt, clay, some yellow offlor. Baven (zyer siderite concs at top 0.4+ 11,4 Leveling up slope to silty ferrised zone. In creek bed parts of this zone black shzle as below About 0.4 silty beds at top. 6.5+ Shzle, as below, to zone sideritic concretions in gress roots, their posifion approx but within 2'. In lower part are scattered small concs, weather in bluish-white chips as do fish + chert ones lower in section. 27

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W-2, From top #5 SS - Skull Cr - Fell River contact, down Skull Cr. bl. fissile sh. 5.0 Sandstone, fine-gr irrvg, thin-bedded with partings + thin interbeds of gray tuffs gray shale. Some zone secondary Fe. Or with scat concretions 3 ft from top, 2t base 0.1± Fe bed irveg surface. 0.6 DA gray claystone, silty 2.0 Siltstone, grading to sandstone locally chiefly sandy, thinly irrvg bedded with Fe impreg zone locally in upper 0.6. 0.1-0.4 Ferruginous platy SS, on Fsstone cap on underlying beds. 3.0 Sandstone, fine-gr, 2 massive beds sep. by Thinly lam., shaly SS 28

massive beds buff, silty beds. February 6th stin, laterally these pretty beds go out + sll is ss, In next gully - E, one nearest road there is 13 feet massive x hem ss buff, loc red clay weath, and gully does not penetrate it,

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Resume Gov't (zuyou area. Skull Cr. - Besel part has bentonite which may turn out to be good marker. Local abundance fish & reptile bones may not be typical over large area, but similar bones in Ceville quad -- & Hot Springs S.D. (see spec.) also the plesiosaur from N. Colo in this approx position. Fall River - Locally much steadier than in most other parts of area, more evidence of burrowing organisms. The upper "vermicated" zone doesn't seem to be evident here, nor does shale zone common above besel ss on Jayou Kare Cr. present. Lakote. Believe only part of it is exposed & that red claysstone besel part section are Lakote. Set up like that on Robinson-Theobald sect. Jayou Kare Cr. with uppermost ss coming in, but here some grey clst between it & Fall R. contact. Should get more info on cross cutting of massive SS near top Fall Riv.

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[see repr. 287 Eichen Bull sec. 37] 17427 Locality W-5, New Haven ave. New Castle - Still Cr. section. Beginning at shelvy ledge protruding from forest cover. Newcastle (top not expose) 3.0 Sandstone, med-fine, gr, platy brown weathering loczl ledge, thinly x bedded to irreg. bedded. 4.3 Slope wash on soft zone no outcrop. 4.5 Sandstone, med-fm, qv, thinbedded, weathers brown slizblly in upper part, locally frizzle below, giving platy ledge + re-entrant over ledge underlying massive ss. 10.0 Sandstone, fine gr, forms massive ledge but has fairly evenly spaced bedding plizes 0.6 to 1.0 in lower half with worm-mkd surfaces. 31

wartyous yellowish gray, pocked. 3.6 Sandstone; thin bedded, lentic to x bedded loc, curb blocks loc, shly ptngs, worm-whd loc, + much worm tracking, Locally the bzsl 1 or 2 feet has f/brown worth beds, This ss chiefly hardy, much CaCO3 but looks secondary. 9.5 Clzycy ss znd szudy slzlu wartyous gray, upper 2' very szudly clstu to clzycy ss, Another very szudy zone from 4 to 6 feet from top, At bzsc is bed lzmrazld, finegrn ss with few shale partings. Sand occurs through zs lzmruzo, lzm beds, irreg loc. in bl. snzy sh. Unit as whole dominantly szudy, Bzszl bed locally crops out, Orange br worth lzm, ss. 0.8 thick 7.1 Clzycy ss zs above. is interclm + inter thin infarbod; both lzm+ messive 32

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Upper pellet zone finequass with shldy plas thin. bedds & laminaze, Besel 1" is calss of peculiar pellets. (Sample 11) 12, ± Shzle, black when fresh, interval covered by slump on road except for upper 2'± and lower 3', Upper part shows frozen on fractures is slightly silty, some at base, weathers to fine bluegray chips on surface. some conc's in float not seen in place 5.3 Shzle, black, clay fissile, with zone swzll (6-8") conc., limst weath O.B. - broken, at top. (Sample 1-channel) 2.4 Shzle, black, clay fissile, At top intermittent conc. zone, of thin Fe cones loc. assoc. with Fe + gyp-cemented pellet zone which is sparingly fossiliferous. (Pellet zone = Sample 2A, shale = Sample 2B) Lower Pellet zone → A825 9.5 Shzle, black clay, fissile, with conc zone 2' at top, 0.2' flat, vert fract. Fe brn, purple on 33

break, sideritic. Other scattered cone zones one locally 217 from top another about 4.0 from base. Sample 3 = upper 3' Sample 4 = lower 6' 4.3, Shale, dk grey to black, interlam in fine ss + siltstone in upper 2', upper few inches worths Fe OB. Other silty zones, chiefly in bszl 0.5. Gyp on fracture surfaces. (Sample 5) 7.3 Shale dk grey to black fissily loczl interlam silt zone 1/0 from top. Shale is tilter than that above 4.3 finely uniformly silty (Sample 6) 3.3 Szsds tone, + siltstone, fine, clycey, ivrec interbedded + interlam with silty black clay. Worths fo crumbly yellow grey outcrop. Has loczl 1zryc Fe worth 15. Concs. + gyp on fractures. 34

4.8 Shale, black, clay fissile. To ditch bottom. On down hill cuts next are in obvious slump blocks. (Upper 4' = Sample 7) From base mud (3.3 above) in slump block, micaceous down - this section only approx. 6.7 Shale, blk, fissile, with thin shale zones & laminae at top then thin ss 2.7 above base which loc is conc. (Sample 8) 0.3 Sandsstone yellowish grey fine grt laminated sandsh ptsns 1.2 Shale black-fissile (Sample 9 in part) 0.6 Sandsstone, lzn, as in 0.3 zone (N). Containe local large Fe Browneth calx concs. 4.9 Shale, dk grey to black with thin inter beds of sandstone and siltstone, (Sample 9 in part) 3.5 Shale, dk gray to blk, fissile 35

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(Sample 10) Below the slump repeating units above & covering normal section). 36

Loc. W6 Mount butte. Starting at stratigraphy, highest part of butte and measuring down 513 Sandstone, med.gr., friable, ochrous - red to orange in thin xlam beds to x bedded) 5110 Sandstone, med.gr., massive ledge-forming with friable bands and cross upper 8.0+ commonly weather yellow-grey to buff, loc. caps ledge, but this too goes into friable red weather ss. In massive xlam beds, crudely tabular in faces with planes turning forsets approx 11 bedding, big xbeds Colouration variable, chiefly orange & red, considerable conc. Fe on bedding & xlam and scattered in very small hollow cores. At base about 1/2" layer + Fe stone. Pebble found in it but only one seen. 37

5/16 32 39 med med-course et base loc. 11 coarse loc frizblet too coa strungy 11 course loc forzable too coarse 7 above some (occ coarse 3.7 med qr. Some course but 2ft brt 13 cyl. many longer but 21b from top is cyl. about 3', 3' from top is cyl. 39 22 23 84 12 39 51 22 23 96 16. 42 56 34 225

4.7 Siltstone, light grzy, clayey locally peppered with ferrous mous spcs. Soft, forms white clayey wash on bench btwn. ss. Becomes harder & shadier at base 2.7 Sandstone, fine gr., locally slity . Upper 0.5 to 1.0+ is locally qtzitic, massive, light-gray to yellowish-gray. grades into material below. locally has Fe pipes vertically prob. conc. only 3.2 Sandstone, fine gr., friable, mzy locally be clayey. Has softened yellow wash ferromagnous spcs. 96.0 Sandstone, massive, cross lam to cross bedded, upper 5f med gr. then 1f med with minor coarse. This is chief cliff former. Below it 18' friable, coarse qr, with some cyl stringers. Then 3± chiefly med gr. At base 13 ft mostly cyl, large shots to pea size chert & qtzite; some has coarse, clzyth.

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5.0 Soft beds, obscured by slope wash. Upper foot appears to be more cal as shown in claystone matrix 3.5 Sandstone, fine gr, soft friable, locally clayey with some intraclasts. sandy gray clay, soft. 6.5 Claystone, sandy dk gray with irregular laminae & thin lenses of fine gr. ss 5.5 Sandstone irreg intraclasts interlaminated dk gray to black carb. sandy sh + clstn. All soft 22.0 Alternating beds (prob lenticular) of friable white, loc yellow with med gr sandstone and dark gray to black shale. Beds rarely over 1 foot, generally 0.6 for ss + 0.4 or less for sh. Some shale sandy but most not, some carb. 7.0 Claystone, dk gray to black plastic. At top some shly

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with plant + leaf fragments Becomes sandy at base. 6.4 Sandstone, chiefly med-gr, [illegible] , clayey throughouf soft with lower ft locally coarse or with scattered shot-size chrt+qtzite grains. 4.2 Claystone, light gray sandy grades downward into unit below. 9.2 Sandstone, med-gr, frizable few poorly resists at ledge, becoming clayey downward and grading into unit below. 6.0 Claystone, light gray, very sandy except for upper 1 or 2 feet weathering yellow stain. 10.6 Sandstone, gray medium grained frizible, soft. Few liquidtic pntns in basal 2'. 2.6 Sandstone, med to coarse, interbedded with hard sandy to cpl liquidtic claysh Sh, Gray, brown & blzcl- 40

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in thin inter beds. 11,2 light grey Sandstone, mod to coarse massive friable, x lamin loc quite in lower 2' 0.7 ± Liquitic qulte claystone, chert pebbles ss pebbles + clay pellets. Sandy black- to dk brown. ( Sample 1 ) Possibly float of fos. wood from hard 4,6 Claystone, gray, slightly sandy, locally brownish gray with carb flecks. 4,9 Sandstone, soft, friable with sandy claystone in middle part, mod gr 11.0' Sandstone mod gr with shot to ½" scattered pebbles, throughout upper 9' becoming slightly clayey below and grading to unit beneath. SS is gray some Fe red+yellow stain. 7427 4/

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3.7 Claystone, sandy, some clayey ss, 2 soft zone graded with beds above & below. Grey. 8.0 Sandstone, fine to coarse, firzzle, calcic in lower 6 feet locally but not at some places lower 2 or 3 feet is resistnt forms ledge sitting on clayt below. 2.2 Chert, bedded, grey-white yellow grey. 6.0 Claystone, purplish with grey to dk grey in upper 3.0. With some s/zabby brittle fine ss at top 6. Lower part is light grey clstn, greenish cast becoming sandy at base. 2-? Sandstone with chert stringers - top slope wash

W-7 Old caved mine entry just 1/2 mile E Aladdin, Just N. of Wyo Rt 111 in center N 1/2, SE 1/4, sec 28 T 54N, R 61W caved entry in soft beds Part A 33.5 Sandstone, massive, mod qpr, x-ltm., weathers light gray to buff locally with pinkish rdst, finely soft to friable. Beszl 6.0+ contains rdsts plant stems and conc. Fe in oval cones + stringers. Near top scat pedsbe concs. 0.5 to 2.5+ Conglomeratic zone. Mixture of large blocks and poorly rounded pieces of sandstone, hardy plty, siltstone, pellets claystone + silty claystone, chert + qtsite granules and a few polished pebbles. Evidence of much plant matter, now Fe stained on weathered surface cavities some Fe conc. Matrix chiefly fine to coarse SS. Underlying ss appears to gradl abruptly into this cgl zone. Chert granules common at base big chunks luczl stuff more 43

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common of top. 13.0 Sandstone, med gr massive, cross, laminited, with layers + scattered pobbles (seldom more than 1/2") clt qtzite and some local zones with silt stone + ss pobbles; lather gen. lecutular. locally has Fe stained upper surface, + Fe lined cavities in upper ft. 2.5+ Soft zone chiefly obscured, locally a gray white sandy sandy silt, 5,2+ Sandstone, massive x lam, med. gr., variable in thickness along strike, highly lenticular, weathers buff to brown local pinkish stain. 5.3+ Soft zone varying in thickness with channeling of ss. above + thickening of ss below. Is chiefly obscured but spot sampling shows nothing but shelly, silty ss with interbeds (thin) of Fe impregnated ss. Weathers to wash of white, pink stained silty snd. 44

15.0+ Sandstone, massive, brown-wath med qveined, x-lzm, same palaf zones in bsssl part. Part B To west along crop of 15 A ss above, to next high point in ridge, starting at base of 15'ss above, 14.0 Sandstone, massive, x-1zm. med qri, weathers buff to brown, some palaf zones in f+ filled cavitics in bsssl part 20.4 Sandstone, thin bedded, x bedded locally silty, faizble wathis light gray to gray-white with fempreg lzycas landing pink stera t float chips of red ss, locel lenses massive thugh bedded ss. 21.5 Sandstone, med qr, massive x-lzm to thin-bedded-x bedded. Highly ivrey, zone have locally obscured. Channals brown-wathy massive lentiulzely 1B with x-beddl stuff 45

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46.0 Slope obscured by wash and slump to base of 1st Fall River type SS. Details of contact dug out locally - down from base of 1st Fall River 4.6 Dark gray shale chub freqs grading to gray shale downward. Partially obsc. in middle part 13 creek- 0.5 Siltstone + silty claystone, light gray, weathers white 2.0 +/-? Silty claystone + sencer clayey siltstone, massive yellow to orange mottled on gray-white Measuring up slope on Fall River from base lower ss. 4.0 Sandstone, t/bulb> x-1cm fine-med, qr. buff to brown bedding surfaces worm worked + some vertical borings from them, surfaces commonly ripple marked. 6.0 Covered Slope 96

PT C 10,6 11,5 13,6 38 3,7 6,0 4,0 Coulol 4,6 46! W8

3.7 Sandstone, massive fine-gran layer bedded ?cm, xl2m. weathes light yellow gray to brown. 30.0 Covered slope. 13.6 Sandstone, fine to med-qr, then baddled, loosely-fed, weathes light gray local yellowy red orange brown stains, Forms shelvy ledge. 11.5 Sandstone, massive, x-l2m, fault med. qr. weathes brown to orange brown. 10.6 Covered (locally) shaly, silty, in lower part. Part C 41.0-? Sandstone, massive, x-l2m med. qr. Laterally this thickens to 20' and cuts out soft 10.6 interval below, joining massive ss under it. Soil with Fe cones + thin backs play Fe impreg ss.

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Locality W-8 Nicholson Ranch On S side of local high ridge E South of Wyo. Rt. 111 about 3/4 mi NW Aladdin, NW cor. sec. 34, T.54N, R.61W. Moving down from within lake, Starting at top of massive sandstone that forms lower cliffs in hill. 72.0 Sandstone, chiefly massive, cross-laminated, medium-grained weathers yellow grey to buff in lower 50'+ , darker buff to O.B above.. Contains local zones intraform type Cq1 with big chunks of soft pisty X bedded SS. - one of these locally about 18' from top 2nd a lens locally 4' from base. Base/ 3' hzs scattered cht + qtz pebbles 7.3 Conglomeratic zone, variable laterally, contains med. gr SS with chert,qtzt = cs grenules, pellets SS+sandy clsty, grades into loose unit above. 48

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Bczl 2 or 3' is locally clzcy ss, or frizile ss with some hard lodges mod qr ss. Polished pebbles loc. break 20 + 15 35.0 Sudzstone, medium grzcned, mzssive, x-1/2m in upper 20' wethers yellow gray to dirty yellow; lower 10-5' rvegi bedded in beds 0.5 to 2.0 with interbeds slty to szudy sh + shzly ss, qrzy to lquiter brown,, some purple, Thn except in lower 2 or 3' where they are loczllg 0.5%. 1.5 Shzlc slty, grzths qrzy is dk brownish qrzy with plzt frqgs (including cycrd lczves), bzscl 0.5' is lquitic shzlc mzyg plzt frqgs, wethrs purple, much yellow stn on frqys + crzcks. 1.0 Sudzstone, clzcy fm-qv to szudy clzy, plzt trqys. 49

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4.0 Sandstone, mod qty massive, forzole forms, broken jointed lodge, is yellow to yellow gray, some carb streaks & local thin layer x bedded slizly sand 1' from base. 4.0 Shale, dk gray to dk brownish gray finely silty, weathers gray to purplish gray, many plant fragments and local thin zones plant accumulation making liquid shale. 2.5 Coal (liqute), and shizly liqute upper 1.0+ has considerable black coal soft coal, lower 1.5 chiefly slizy clay, liqute. 1.5 Shale dk brownish gray, weathers light gray, plant frags becoming sandy at base 1.8 Shale, sandy, gradung to slizly sandstone with thin inter beds shale. Plant frags, some recognizable as torns 50

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5.5 Sedstone, med qr, upper 1.0t relatively clean sandy, lower mixed with coal. Matter, becomes shaly at base. 2.5 Shale, dk, gray, blocky, plastic, finely silty. 1.1 Coal, lignitic 3.0 to blocky sh. Claystone, hzrd lignitic immediately under coal then grades down thru black to dk gray. 0.4 Sedstone, fine qr, forzble gray. 1.1 Shale, dk gray, blocky, finely silty 2.6 Sedstone, fine qr, some silt, soft massive, weather gray 1.0 Shale as above becoming lignitic at base.

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0.2 Liquito. 2.8 Sandstone, massive, fine gr some slt, weathers light gray some yellow & bru stain on joint faces 2.8 Shale, blocky, dk gray loc. finely silty 1.0 Siltstone, loc. sandy, liquidic Split 10 1/6 11.6 Shale, blocky, dk gray chub frags, locally more of 2 claystone bzsl 1.5 silty cding at bzsl 1y 0.3 sands clay; siltys, which weathers gray. 1.3 Shale vs above 2.4 Claystone, sandy to silt, tough liquidic, brown, becoming sandy at base 1.0 Sandstone, fine grained, massive, weathers yellow-gray some 1-cmize of 1y silty sh + ss at bzsc, gypsumous 52

11 13 15 2.5 --- 41.5

2.8 Czystone, greenish grey gypsum zone at base. 13.0 Chiefly marl dk-greenish grey with nodular zones + irveq beds limestone. 15.0 Chief obscured by slope wash, Patches grey marl + some limestone in float. 11.0 Sandstone, fine, qr, yellow weathy, friable, thin bedded + lzm. with zones interlamin grey shale + some thin beds. Redwater- 5.0-? Shale, salty, black-dk grey, with silt as laminae. Wash cover in stream bottom. 53

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W-9 Road + strezm cuts along rd to Four Corners from W/2 R+ III, chiefly in E1/2 NE 1/4 sec. 27 T.54 N., R.61 W., just N junction with R+III Bez[illegible] Fell River Szuchl 3 to 4' Szuadstono, tzebeloz x-lzany rip mzkhod wzren tszkus. 40.0 Covered interval - Upper part starts dk-gray silty shtelo grading to greenish downward then red zone Fe stained. This occupies 10' below overlying SS.- Below this looks like var. clsta + fest.silt 124 yrs. 0.5 to 1, Sandstone, coarse grained med gr. with clay pellets, gravel size + few chit + qtzte grenules. Chiefly med. gr Fe st.+ improq. 3.5 Interbedded gray to greenish gray clay sh. + silt st+ ss 6.2 Sandstone, massive, med gr-xlum calc in lower foot, chert+ qtzst. grenules + small pebbles. Some polished pebble frags. Polished pebbles most likely from here or clasts directly below 2.0 Obscured, wash-white sandy red discolored. Prob snely clstn or cl. ss. 54

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2.1 Sandstone, and qtr yellow wash. Thickness w of red to big channel fill cutting out most beds below. 15.0 Shale, blocky, locally more of a claystone some places 2.0+ light gray, greenish 2.5+ red & maroon 2.0+ yellow + gray&sh yellow 1.5+ red & maroon 7.0+ gray About 3.5 from base is thin bed sandy clsta, below this, clsta gets caltery. 1.3 Silts/slac, hard sandy, loc to cement in upper 0.8 rowzinder is clayey silts, grading to silty sh. 5.5- D/Gray+claystone, plastic above, with qyp Xts grading thru silty lighter gray to greenish clayey silt. (Sample 1 of upper part) 55

0.5, Siltstone cemented by Fe may also be opaline 9.7 Shale, dk gray clay, some silt interbeds in upper 3'. Sample 2 of upper 5').) Lower 4 or 5' covered by wash. 7.6 Sandstone, fine gr, massive, Upper 0.5 loc. Fe impreg. Weathers pinkish brown. Has some silty partings. 21.0+ Interbedded dark gray shale and fine grss. Shale has plant remains locally, contains interlam silt + sand Sandst. in friable, locally silty beds. lenses up to 0.8+ thick, weather pinkish buff to, where silty, yellowish gray white. Plants include ferns + rosettes = casts of ? 56 Coniophoris brevitfolia (Faul.) Bell

212 4 of SS + 2 to Shelu 10,6 4,0

Locally in road cut some of thin sands coalesce to form 4 foot ledge. Gully comes in from east end wash terminates outcrop of this unit. South across gully, top of 7.6 SS above can be located and beneath it is 23 feet of same type SS to slope wash at base of ledge. Presume that SS beds thicken to exclude 18 shales in at least upper part of interval above. From top of 7.6 SS across gully to S. 23.0 Sandstone as in 7.6 unit 15.0 Slope wash on non-resisted beds, some gray shale float in basal 4 feet 5.7- Sandstone fine gr., locally silty & friable, weathers yellow gray to ye brown

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is variable in thickness. 4.5 Chystone, clt gray, loc. silty, some gyp in fractures. (Sample 3) 1.3 Lignitic brown shale, some coalic of plant frags. (Sample 4) 5.3 Chystone, dark gray becoming silty + sandy in lower part. 0.3+ Sandstone, cozly, loc. clayey with plant frags. Pyrite nodule in base & extend into top underlying SS. ? Sandstone, massive, 90CS under slope wash 58

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W-10 Arch Creek section. NW¼ SE¼ sec 14 T51N, R.66 W, just off rd to Moorcroft to W about ¼ mile before it turns W over ridge. Part-A Begins within Fell River at top of small butte ¼ mi N of where Moorcroft rd swings W up ridge. Measuring down 10.0 Sandstone, tabular cross-laminated to thin bedded. chiefly beds 0.4 to 1.0 buff weath. X-12m. with ripple-marked bedding surfaces, much "worm"trucking. Few thin beds & shaly laminated SS partings. Fine-grained. 7.3 Interbedded (and interlaminated) siltstone and fine-gr, ss with partings silty shale. chiefly lean siltstn, becoming gray & equillceous toward base weathous yellowish gray with some brown Fe stained layers Beds 0.1± , worm tracked places. 11.3 Shale, gray to dk gray with laminze and thin beds of 59

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"silt throughout, locally has coarse forags and some is worm- worked. Some Fe impregnated red-brown weather silt layers, some conc. Fe in silty zones. 2,2 Sandstone, fine-grained, thin beds up to 0.6, cross-laminated breaks to platy + flaky outcrop along laminar, some partsings silty to sandy shale. Weatherers a greyish brown and is locally Fe impreg. At top worm borings common. 2,4) Shale, gray, silty with interbeds 0.1 - 0.12 of siltstone, latter commonly Fe impreg. 9,7 Shale, gray and silty in upper 3 ft, black, finely silky below, complex weatherers to fine flakes some thin gyp seams on bedding planes. (Sample 1 is from 2 to 5 ft above base. 1,0 t Sandstone, fine gr, locally Fe impreg. cross-lam, upper part Weatherers platy, lower 60

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commonly to peculiar finely lumpy surfaces. 5,3 Shale, dark bluish gray, some thin silt interbeds in upper 2'0. (Sample 2 is spot of about mid, 2') Local qgp seems. 1,5 Sandstone, fine grained, upper 0,6± commonly with irreg. laminaze clay, friable, lower pzvt is x-12m bed that weathers to thin ledge breaking to platy frags on laminare weaths yellow gray to buff. 4,8 Shale, gray, much of it (stained) (?) brown or brownish gray. weathering brown. Finely silty, czrb frags loc. Upper 1.5 feet is dk-gray, silty with some silt in thin beds, some Fe conc layers in upper 2'±. 1,4 Sandstone, fin-gri lzm to x-1zm weathers buff, some Fe stain. upper 0,7 loc. hard, lower 0,7 clayey with IB shi 61

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3.0 Shzlo, very salty in upper 1.5 grey + light gry, brown stem, lower 1.5 less silty, dark grey, 2.4 Sandstone, fine-grained, siltstone irreg interlam with dt- grey shale, locally just mixed with clay. Some interbeds sandy shale with crab feces. Unit Fe + yellow stem, soft, loc weathers to rubble small irreg pieces- siltst. gry white, ss OB. 1.0-2.0 Sandstone, fine-gr, cross-lam. in beds to 0.5, hazel, ripple mixed. Czp ledge, weaths buff to Fe brn. 3.0 Sandstone, massive fine grained, silty, grades laterally to siltstone. weaths buff. 1.5 Siltstone, sandy + shaly, irreg, thin bedded, some shale lamine. 62

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0.7 Shale, gray silty. 112 Sandstone, fine gr, in thin beds with shaly plugs. Frisble. 0.3 Shale, black fissile 6.3 Sandstone, fine gr, irreg, thin bedded, cross laminated, locally some massive beds. Weather buff. soft zone, locally hardened by Fe about 3' from top. Some shaly silt plugs Forms shelving ledge. Notice in thickness laterally. 4.0 Sandstone, continuous down from above but more thin bedded & becoming shaly. Grades to interbedded & inter lam. Shale + silty 1:5 to 2.0 from top, and this into silty clt gray shale in lower foot. 63

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Part B - Starting at base of bluff and measuring up to join Part A, Bescot bluff approx. 16 feet (hand level) above top of basal sand (Part C), this interval obscured by slope wash. 18.2 Clzystone, sandy, conglomerate with lenses clayey clftc sandstone. Laterally green beds not sandy, consist of 8'+ of vein. green & grey clzystone. Lower 3 obscured by slope wash, is vivid green to greenish yellow clftn - cepped locally by dk green szudst to siltstu, conglomeratic. Above this interbedded qgl. greenish gray clftu sandy, About 6' from base sandy green clftn qgl. extends upward 5+ and is succeeded by about 3' yellowish gray sandy cflt clftn Above this upper 4'+ is lite gray & dk gray clftn 64

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of some type 0.3-0.4 Zone of coarse sandy clay, pebbles more abundant. A number of polished large pebbles found in place here. Color 3, is yellow stained with some light grey matrix. Seems to be uncured on unit above, grade up into that below. 7.5 Claystone, sandy, is sandier at base, with calcic granules, and the upper 2 feet, but middle part sparsely sandy + few granules light grey with greenish cast. 3.0 Sandstone, soft friable, clayey at base, but chiefly med gr with interstitial silt and scattered coarse grains. Weathers gray white 65

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8,0 Sendstone, fine to med gr with scettered granules. At base is thin coarsely calte layer resting uncint on surface of unit above chicfly a frizble sand with some clay and isollet scattered granules. Large polished pebbles found both at base and isolated in clzey sand above, Locally lower part this intercal has chert conc. or cemented cal. layer Some geonics in float from upper part this 8,0 zone. 2,3 Claystone, dark gray sandy with some irreg interbedded sand at base, hard. 1,0+ Claystone, dk gray, hard finely silty (bottom of Sample 3) 4,0 Siltstone, argillaceous massive weathers light gray, grades down thru silty clsta to interval above. Hard, with scattered chert granules & some crb. frags. (Top of Sample 3 is 6251 foot) 66

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5.3 Chyestone, hard, dk gray silty, locally to argillo silt, has scattered coarse grains clay qztz + possibly little pellets of Fe mineral locally 2.6 Chyestone, gray to clk-gray soft 1.2 Siltstone, hazel light greenish gray, clzycy, and silty chyestone. 4.5 Chyestone, gray+clk gray in lower 2 feet, black, possibly rubaceous in upper 2.5. 5.3 Shzle, light gray, weathers yellowish to olive gray. 3.6 Szudstone, tene qr, thin bedded, x-1zu, micceous. In thin beds interbedded with light-gray shzle. Some purple uks + worm trails on bedding, weathrs light gray & yellow gray. 67

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Sample 7 of upper 2ft. Slates rapidly with considerable expansion 5.3 Claystone and shale, about 1.5 soft waxy, possibly beaontitic sh 2t bese light grayish grcau, Grade upward to blocky sh, loczllly claystone, gray with greenish cast. 41.9 Claystone, soft below, becoming hard upward. Gradztienzi above + below, broken for color change. Mottled zone clayt-red brown + greenish gray in lower foot, then 2ft almost entirely red brown+red, then upper part mottled, red, purple + green greyl with the red hues fading out upward. Sample 6 of center red zone Sample 5 of upper 2 feet Slates rapidly with little expansion 3.8 Claystone, gray, hard below grading upward into soft waxy claystone (Sample 4' of upper 2') *-> Fall River contact 3.5 Siltstone, clayey, incl silty claystone, hard. In sharp contact with underlying unit. Dkgray to black 68

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with coaliferd plant frequents 6.0 Siltstone, hardy, grey, plant frequencies, inter lzm. +rvee + in tar bedded with clayey siltstone and dk gray. silty shale underlying unit; Locally forms crumbly. ledges gray-white to yellow gray weath siltst. Shale interbeds up to 0.7, fissile above blocky below. Joins to 12st unit measured of part A. Part C - Sandstone outcrop down, on lower slope. Part B begins 16' above top this sandstone 10.6 Sandstone, massive, fine- med.gr. -x lzm, weathers white, friable. Fossil wood in root at top. partially obscured. 23.5 Claystone, variegated, chalky greenish gray upper 10't 69

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About 10-13' from besc is variegated red + green streak, Bessel 10' completely obscured. Fossil wood in clot. 18.0 Sandstone, massive x-12m, conglomeratic, mid-course, Clt + quartzite pebbles, some large grey chert pebbles, rounded but not polished. Part D. Outcrops across Fall River ridge going W on Moerdt road Laterally massive fine- medium grained SS, locally tabular x-12m in lower part, comes in along strike in place of 10.0 SS capping route (first unit in pzt A.) Thickness varies, locally is 25'± Upper surface rolls, is about 6'± to top of lignitic shale above SS. structure + poor OC preludes 78

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complete Fall River section In ditch cut on up road is Fall River - Skull Cr. contact. About 1/2" bentonite in Skull Creek +/-9.8 above it. S.C. is remnant in little syncline, includes some banded-greening cones, locally. Top of Fall River is chiefly sandy shale + platy ss + silt which locally is Fd imprccy. No good section of this and local structure makes piecing or crosscrop measurement N.G. Part E - Road cut NE... of buttu is Bzsl ss. (18') of Part 3. Conglom, sandstone in contact with Morrison. Here it is 32' thick with bzsl 3'+ a conglom, chiefly of black chert pebbles. Under it is 1-4 to brown claystone which grades abruptly down to typical gray green. About 27' Morrison in cut, partially obscured. 71 r8

5:3 14 212 53 74'

W-11 Picked outcrops along NW ridge in NE cor SE 1/4 sec. TS-2N, R 66 W, about 1/2 mi N.E. Arch Cr-Inyu Krz Cr roads junction. Redwater shale member of Saukman Part A 11.0 Sandstone, yellow with chert-stromatons below, becoming sandy ls fss with IB sh. Some very thin crinkled beds, of qyp st top & bot, qyp in Mt masses, 11.0 Shzle, gry, calc, partially obs. 0.8 Limestone massive gray white. 75.0+ Claystone, izlc., variegated grey-green and red, weather in pastel green-pinks with thin interbeds finer massive limestone, and zones nodular ls. Dinosaur bones, black, czlc, gray- weather on slope up to 431+ above b.rsc. 35.0+ Claystone, noncalc., grytealk-gray-red brown, locally silty, with some calc flecks. Chiefly brownish in upper part. Partially obscured by large float blocks. 32' of it then upper contact obscured - estimated 3 more feet. 16.0+ Sandstone-wcd gr with chert qtz pellt cql in bzzzl 2-3 ft which contains levqu cobblet-pobble 72

size gray chert (not polished) as well as chunks claystone. 16.0± Coveved interval, float of ss blocks, szud + cht pebble (swell) grzuel from above 6.0 Szuclstone, massive, fine-med, x=124 25.5 wash coveded slope base? 15.0± completely observed, upper 10-5 friable to clzcry cyltic ss with cht in rocvse, gzevule + swell pebble sizes and sczttleved polished pebbles. Include lzwgest seen - one about 6"x4"x6" 14.0 chrockly clayey gray ss, few grzauoles cht, upper 1.6to 0.6 ± hzud sndy clsty wecthus to white flzky + plty picces - some cht granules. Interval has some polished pebbles in float of lower ½, 2.5 Clzystone, gray to brownish gray szudy 6.8 Clzystone dark brownish gray with scelende crystals 73

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becoming sandy at top. Part B ( across swale to base of next butte ) 18.0 Sandstone, caps butte, fine to coarse grained, clt + qtst pebble stringers + irreg beds. Has impressions plant stems, weather Fe to O or game red. Most cqt + course stuff in lower 4' top is very silty ss. Part C ( s end of this 2nd butte ) 21.2 Clzystone, thin wash & crust cover critical spots dug cut. Lower 10.6 is red wash fresh (Red zone) shows chiefly red + green mottled pebb. Green at base with red zone in top Next 10.6 is mottled green with some red, latter decreasing upward (white zone) 2.0 Light gray silty clzystone, in sharp contact with 'blue zone' above, grades to "red" (blue zone) 5.0 Silts tone, shaley, some silty siltm. dk gray to black, hard, coxified carb frags. Grader to unit of siltsln above cont on reverse (over) 74

4.5 Silts tone, somewhat argillaceous in lower 2.5, hard massive white ledge in upper 2, which is finely sandy. 4/3 Interbedded dk gray to black sh with selenite and thin layers + laminar fine gr. ss, becoming sandy upward in rather t gradual to next unit. Some ss layers Fe imprecq, worm touched 8.5 Irreg to tab. thin bedded x 12m, buff weth, ss. Rip wkd, worm tracked some Fe imprecq beds in upper 3', Local shaley ss pts + thin beds Some qrp layers. 6.5 Interbedded brown weth massive x 12m ss in beds 1.0- 1.6 ±, and gray siltstone, worm tubes in ss, vertically, silt is uniquely laminated, some mottled gray, some worm worked, weths gray loc. Fe yellow + o. stem. 6.8 Sandstone, chiefly one massive fine gr bed, with 1 foot bed at base and about 2' of 1.0 to thin piely beds on top. weths buff. 9.0 Convexed interval, some dk gray shaly in spots on slope 2.0 Sand stone, fine-grsd, Febedded o.k.bru Fe imprecq, rp. mtd, caps butte.

Imyan Kara Creek section meas by Robinson & Thieobzld. (W-12) 20 Redweter shle...55 3 Sandstone 1 shale 2.5 Sandy limestone 3 Claystone 2 limestone (56) Claystone with ls 11 ls+clsta 67 Claystone 7 Sandstone 42 Claystone 29 Sandstone 21 Claystone, G. lty 18 Sandstone 75

Mon 2. - 24 Aladdin - 219, M. 42 incl 10'ss Gov't Canyon - FL = 102 --- 107-47 Fall River = 131 Skull Creek = 83' 177 163 - Arch Cr 177 - Cabin Cr. 133 - IK#1 841 - IK#2 Wechinkle 107-147 2.5 16,6 9,5 15,2 11,7 22,3 721.0 75.0 147.0 72.0 35.2 107.2 352 8,5 12,6 7,7 7,4

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