Field Notebook: SD, ND 1959
Page 119
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Transcription
blobs and some rusty Fe stain. Becomes sandy at top end contains stringers & lulls of shale in upper 1,3t instead of being mixed. 11 2.5 Sandy, fine grained, gray, loc greenish subgraywacke with scath, glauconite grazins. OB tube-like cones and cone protings. Some clay blobs. 12 1,3 Shale, dark gray, "clay", prob. bentonitic, forms popcorn crust. 13 1.2 C0329 Sandy, fine grained, greenish gray, with scath. feruginous cones and Fe brown -OB impreg. locally, weths olive gray to yellowish. 14 3,5 Shale, dark gray, "clay"sh, some thin layers & stringers ss at top and base 15 2.1 Sandy, fine-grained, gray, loc. greenish gray, weths, somewhat yellow gray. OB stain, stringers and tubules. Also some scath. Fe stone cones. Frizible, Some shale layers in lower foot. Weth olive gray to yellowish 58