Field Notebook: Texas 1959
Page 29
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Transcription
PG. 43 24) Limestone, light gray to cream, thin irregular beds, 2" to 4" beds - laminated, Pink tones about 65' to 80'. -----87'. 25) Limestone, light brown-gray, wavy bedding, in beds 2' to 3' massive, clayey and silty. SEVERAL SMALL FAULTS --------------- 97'. 26) Limestone, medium gray, 2' beds, with brown shale cycles of these, the shale gradually becoming dominant --- 193'. [up to Hess - Neal gate. This is very near the base of the Hess Fossil Bed] PG. 44 7/20/59 -[walked about a 1/3 to 1/2 mile east along bed 26 and found section better exposed and better preserved] Coll. 4-26m - 1/2 mile east of section 4, 25' below fossil bed. Coll. 4-28mB - 1/2 mile east of Sect. 4, from a 35' to 40' light gray limestone above fossil bed. - 8' up. Coll. 4-28ma - 5' up. Coll. 4-27ma - fossil bed, silicified just above 2-3' limestone ledge 15' beneath top. Coll. 4-28mc - 35' above fossil bed. Coll. 4-29ma - massive limestone about 25' above top 4-28. PG. 45 27) Fossil bed, two lithologies a) basal calcirudite---------- 28'. b) Shale and limestone, shale is brown; limestone is medium gray, abundant silicified fossils - brachiopods, collection of bryozoans, yellow silty limestone. -----27'. 28) Limestone, medium gray, 1'-3' beds, dolomitic, chert nodules. Collection 4-28A - 42' up. Omphalthrocus common. Collection 4- 28B - 64' up. Top of hill at 89'. Total ----- 115'. [?]Hess fossil bed includes bed 28; Leonard Fm bed 29 to 34 [?]. 29) Limestone, brown-gray, 2'-4' beds, with lime mud blebs and chert pebbles ----- 24'. 30) Shale and limestone, brown, siliceous shale; dolomitic or dolomitized limestone. 2' beds ------- 29'. 31) Dolostone, dark gray-brown, 4' beds ---- 21'. 32) Limestone, light gray, "graphic" dolo-limestone beds.--12' [Word Fm starts with bed 33]. 33) Limestone conglomerate (calcirudite) with chert frags 3-4' beds - ------- 9'. PG. 46