Field Notebook: Texas 1957b
Page 45
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Transcription
(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.)