Dissertation: Texas 1960
Page 55
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Transcription
-151- Section 8 contd. Thickness (feet) 11. Covered, probably gray-brown shale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 10. Conglomerate, brown to brown-gray weather- ing, chert and quartzite pebbles, brown quartz sand matrix, upper bed has planar upper surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 9. Shale, brown-gray weathering, 5 inch brown weathering sandstone at top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 8. Conglomerate, light gray-brown weathering, with two thin shales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1/2 7. Shale, brown-gray weathering, 6 inch sandstone brown weathering, at top, coll. 8-7, Schwagerina diversiformis, siliceous sponge spicules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6. Conglomerate, light brown weathering, chert and quartzite pebbles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5. Sandstone, yellow-brown weathering, very fine to fine quartz sand, silty, poorly cemented 1 to 3 inch beds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4. Conglomerate, brown weathering, chert and quartz sand matrix, 6 inch to 4 foot beds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 3. Sandstone, brown to gray-brown weathering, secondary mineralization weathers purple or magentia, coll. 8-3, Pseudoschwagerina