Dissertation: Texas 1960
Page 175
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Transcription
-211- Section 30 contd. Thickness (feet) 18. Covered, probably continuation of unit 17 .. 15 17. Sandstone, yellow weathering, fine quartz sand, abundant fusulinids, 1 foot beds or less, coll. 30-17, Triticites milleri? . . . . . . . . . . . . . . . 16 16. Shale, gray . . . . . . . . . . . . . . . 9 15. Shale, gray, grading upwards into calca- renite, orange-brown weathering, upper 3 inches of calcarenite is well sorted and laminated with up to 25 percent quartz sand . . . . . . . . . . . . . 5 14. Calcarenite, yellow to orange-brown weathering, up to 50 percent fine quartz sand in some lamellae . . . . . 2 1/2 13. Shale, light gray weathering, become silty and sandy upwards, abundant fusu- linids in upper 3 feet, coll. 30-13, Triticites primarius, T. beedei . . . . 18 12. Limestone, weathers mottled gray and gray- brown, organic fragmental, crinoid columnals, bryozoans, and brachiopods dominant, 3 to 6 inches of gray shale at base, top bed weathers brown, 1/4 to 6 inch beds . . . . . . . . . . . . . . . 15