Field Notebook: CO 1952b
Page 17
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Transcription
8 At this point the ss over the clay bed thickens abruptly and the ss under the bed things. This interp. about only possibility. Thickness of ss over is exceptional. 9 Clay thickens, shows following section Sandstone [illegible] unconf. 1.7 Light gray flinty clay gr[illegible] becoming gray and less flinty downward [Sample 1] .9 Dark gray to blue black clay, subconch [Sample 2] 2. 10 YR6/2 soapy feeling (bentonite-like clay) [2] scattered flat sand grains (Separate hand specimen of this clay is Sample 3) Below this bed clay is dirty, shaly silty Note: Here sandstones 0 + -1 appear to coalesce to form cap. 10 Clay bed pinches out completely as SS's above and below coalesce. 11 Section starting from near (4 +/-) top of [illegible] sandstone. 33.0 - Massive cliff even-bedded, x lam, fine to med gr. gray ss, weathers brown. 41.6 - Massive cliff of fine to med ss, even-bed x lam, brown weather. Bench between this & cliff above seems to be from frizible zone, is only on N. side canyon. unconf 3.6 Shaly siltstone + siltstone in thin beds. 8.0 Platy very fine-gr SS and I.B. Siltstone, forms characteristic sloppy outcrop of yellow brown platy ledges. 6.