Field Notebook: WY, SD 1956
Page 27
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Transcription
1.0 Sandstone, very fine-grained, massive, buff-weathering bed with vertical "worm" tubes loc. 2) 19.5 Chiefly covered, scattered ledges Fm impreg ss in lower 4 ft, ± At top is 1.0± Fm impreg. SS, foot of worm-trenched siltst + ss. 1) 5.6 Covered. At top is thin platy Fm impreg siltst + fines. This is highest such bed exposed in section. Slope wash. Note- In road cut unit 2 well exposed, is interbed thin siltst + silty sh. minor thin fines. Unit 1 prob., same stuff. 12