Field Notebook: Texas 1957b
Page 101
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Transcription
1) Conglomerate brown chert and quartzite dominate (1/2-1") brown cement, a few dark limestone cobbles 3". 0'SW - 15'+NE, 25' on hill side. 2) Covered, probably light brown silty shale - 12'. 3) Sandstone, orange-brown, silicified in part. A few fossil molds - (?) - 3". PG. 157 4) Siltstone, mudstone and shale, interbedded very sandy, gray to greenish- yellow color. 22'. 5) Like 3, with 1/4" beds and crinoid columnals - 3". 6) like 4, 2'. 7) like 5 (collection 9.2.58.5) 4". Contains "Decie Wolfcamp" fusuline fauna in part. 8) like 4, 10'. 9) Sandstone, medium to light brown 8" some conglomerate pebbles. 10) Sandy siltstones and shales, some limonitic stained bands of ss (very fine grained). 41'. 11) Sandstone, light orange weathering, no internal lamination; total - 1.5'. 12) Sandstone, light tan, friable, some silty horizons - 2" to 8" beds - 20'. PG. 158 13) Covered (here), continuation of bed 12 as seen in next gully north - 14'. 14) Limestone, conglomerate, some chert pebbles but generally small 1/4-1/2", cobbles of limestone up to 7" diameter. (= bed 1, Sect. 42). PG. 159 9/3/58 Iron Mt. Ranch North end of Lenox Hills Dimple, Tenus and upper Caballos are repeated several times here. The highest of the beds are less than 250' from top of this last crest. Beneath the massive limestone (75-80' thick est.) is a marly or sandy interval at least 70' thick, about another 70' are covered, then the folded Penn beds. Most, if not all, of Sect. 43 is missing 3/4 mile SW of where that Section was measured. Unit 14 (Sec. 43) rests on the brown limestone on the Dimple in a couple of low hills. Sect. 44 West end of Leonard Mt. - gully toward reentrant. Gaptank 1) Limestone, dark gray to black, fusulines Triticites, echinoid spines, crinoid columnals, 2' - 3' beds dip south at 10° Total - 12'. 2) Limestone medium gray to brown - changes to shaly strike, massive, sparingly fossiliferous - dips south 5°. 17'. 3) Covered, 20'. PG. 160 Wolfcamp dip NW 7°.