Field Notebook: Texas 1957a
Page 68
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Transcription
58 10) Color white, 2" diam pebbles, some cresoids & hygroscopic, a few jaw lines, brown weathering, gray on fresh surface. 4' 11) a) shale break - 1' b) 7 to 6" well cemented Calcareous, laminated upper 2", flat upper surface. total 1 1/2' 12) Covered 24'--probably shale (gray)--for more brown calcareous may be present. 13) Calcareous, brown weathering, lower part a shelly hardy, a shale break and then the well cemented 4" to 8" calcareous laminated dust total for unit, 4 1/2' 14) Calcareous, (ls rubble) [the main difference between the so called "rubble" and what I've been calling ls conglomerate seems to be the cementing material. In the "rubble" the cement is clay & weathers to a yellow or yellow brown] gray & mottled brown weathering. 18' in 6" to 18" beds. 59 7/6/57/4 7/6/57/5 15) Calcareous, brown weathering, frags in lower part fine pebbles to coarse sand sizes, progressively finer toward top--and sand sizes at top. no apparent laminations. 3 1/2' 16) same as @7, 5 1/2' 17) 3" shale break 1 1/2' of calcareous like @5 18) like @4, 4' 19) like @10, 1 1/2' but pebbles 1" to 1/2" diam