Field Notebook: Texas 1959
Page 3
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Transcription
Collection 2-6A - 33' up, Coll. 2-6B - 85' up------- 112' 7) Limestone, light gray-3' to 6' beds, few and thin shale interbeds. Coll. 2-7 -- ------------------- 32' 8) Limestone, light orange-brown weathering, very fine frag.; 3' to 5' thick separated by 2-7' shaly intervals. The limestone have a "Staffella" fauna, and locally scattered "fusulinids" --- 90'. Cyclothems—10 to 12 - get progressively more shaly toward top of unit. 9) Limestone, orange-brown weathering, 1' to 4' beds. Omphalathrocus type gastropods. PG. 3 7/9/59 near base - fusulinids recrystallized Collection 2-9A - 42' up (Top of ridge 140') Collection 2-9B - 145' up Limestones become progressively more silty and change to light gray weathering. Collection 2-9C - 160' up Collection 2-9D - 185' up; total -------- 215' 10) Limestone and dolostone, orange-brown weathering - very silty - 2" to 6" beds - shale interbeds up to 1'. Collection 2-10A - at 5', Saddle at 80' Collection 2-10B - 105' up Rose colored dolo 3' separated by 4' of orange weathering silt-clay stem. Cyclic beds become. {note: illustration: bed 2: silty limestone (+-) bed 3: silt-sand, silt-clay bed 4: dolo pink to orange} PG. 4 fusulinids are rare - recrystallized when found. Gastropods - brachiopods and ostracods, locally abundant. - 187'. 11) Shale, light gray, and limestone, light gray - shale - 2-5' beds. Limestone - 1/2 to 1' beds. Collection 2-11A - 5' up. at 35-50' Ophalotrocus outlines common limestone is porous and recrystallized). - 89'. 12) Limestone, conglomerate, well sorted - 25'.