-187- Section 21 contd. Thicknes (feet) grading up into calcarenite, e. Calcarenite, poorly exposed interval, poorly cemented medium to coarse grain size, some interbedded shale . . . . . . . . . . 26 12. Calcarenite, brown-yellow weathering, some quartz sand, fusulinids in upper l inch . . . 2 1/2 11. Covered, probably shale for most part . . . . . . 37 10. Calcarenite, brown-yellow weathering,\Queue on fresh surface, many crinoid fragments . . . . . . . . . . . . . . . . 3 9. Covered . . . . . . . . . . . . . . . . . 53 8. Shale, black to blue-gray, silty, fetid, several brown siltstone zones, coll. 21- 8, Smaller Foraminifera, siliceous sponge spicules . . . . . . . . . . . . . . . . . 35 7. Calcarenite, brown-gray to yellow-brown weathering, fragments of crinoids, fusu- linids, bryozoans, better sorted and finer grained near top, . . . . . . . . . . 1 eh. Covered, probably gray shale and poorly esemented calcarenite . . . . . . . . . . . 3 5. Limestone, yellow-brown weathering, organic fragmental, chert replacement common, upper surface has fusulinids, upper l