Field Notebook: Texas 1957b
Page 83
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Transcription
PG. 127 17) Sandstone, quartz gray to brown weathering, cross bedded, beds 1' to 2'. 5'. 18) Covered, 4'. 19) Limestone like 15, 3'. (dip 20, N20W). 20) Covered, 8'. 21) Limestone, like 15, 2'. 22) Covered, 3'. 23) Limestone, like 15, 2'. 24) Sandstone, gray, crossbedded - 11'. 25) Covered, 12'. 26) Limestone, like 15, 1'. 27) Sandstone like 24, 16'. This interval was traced to the east about 200 yards and there the PG. 128 section follows the ranch road to crest of Hess escarpment (See pg. 124). PG. 129 8/7/58 Decie Ranch - map on Photos Collection 8/7/58/1 - from bed 2, Sect. 22 (book 1, p.151) couldn't #1 be a Wolfcamp conglomerate, the age of bed 2 could be "Hess". 2 bags - Bryozoan. 8/7/58/2 - Ammonites and fusulines from folded Wolfcamp southeast of base of sect. 19. This collection is near eastern margin of this light orange gray limestone belt. Massive 4-6' limestone, some nearly vertical, badly faulted 2 bags - 1 sent to GAC. 8/7/58/3 - from a limestone about 60 yards WNW from collection #1. 8/7/58/4 - from a gray limestone about 20 yards NE of collection #3. 2 bag - sent one bag GAC. PG. 130 8/8/58 West half Hess Horst. Collection 8/8/58/1 - from limestone at top of dolomite on western end of Horst, Strike about S40W dip 45°NW. 8/5/58/2 - Top of western ridge, Hess Horst - 2 ant hills in limestone and shale interval at top of Dolostone sequence. 8/5/58/3 - Here we get a limestone and shale interval at the top of the Dolomites. This is probably a more "seaward" facies. It is about 20' thick. The dolomite beneath this interval is 10' to 30' thick but occurs in discontinuous exposures suggesting several different zones of dolomitization. Beneath this zone of dolomites, there is a 80'-90' dolomitic limestone and some shales which contains