Field Notebook: WY, SD 1956
Page 111
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Transcription
2.3 As in next ss above, but upper foot has been 'rolled'. 3.0 Chystone, silky, grading at base to siltstone, gray, with red stain, sphaculitic thruout, 1.5 Sudstone, fine-grained, 12m to x 12m, loc. soft and Fe impreg. 14.0 chiefly obscured by slump, lower 4.0 + is laminated siltst + silky shale, brownish gray with plant frags., and interbeds fine gr. ss. At least upper 2.0 is locally ss as in overlying unit 2.5 Sandstone, fine-grained, brown - weath, lodge forming in massive, loc 12m beds. Thickness locally to 5.0 ± at expense of underlying softer beds. 12.5 Lower 4.0 covered, above this lig. bvn silty shale for 1.0+ then gray silty 54