Field Notebook: Texas 1957b
Page 131
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Section 25, NE end of Dugout Mt Ridge, measured N220E from tin shack, dip here is variable but between 15°+30° to the NNE in the wrygamy Conglomerate. 1) Covered, probably gaptank. 2) Calcandite, lowest certain bedrock exposure, much sand (brown) and chert pebbles, at least 140' thick, probably about 160' including changeasy dip and covered base. Coll. 8/5/57/10 (2 tags) at about 110' 3) Covered, 12', perhaps Conglo, may be nat. 4) Conglo, chert quality to increase over ts. brown sande more apparent. /5' Coll. 8/5/57/11 5) Conglo and covered intervals, this is down a dip slope with a number of folds and faults. I estimate the thickness of Conglo here to be 150'. The upper beds become more calcic and the amount of organic frag increases greatly. a few beds are carboniferous and some are sandstones(?) and white silts. These form a transition in the upper 40' into the next period. to be continued! — [but it wasn't]