Field Notebook: WY, SD 1956
Page 57
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Transcription
Partial section in bluff s of old road to N off Eden school road in about center NE1/4, sec 25, T6N, R4E. Measuring from BS # 2, down, the one at Morrisons goto 4? top Spring Cr section 17.0+ Siltstone, actually a eloquently silty zone -(loczl 2')- ledge at base about 8or10 ft top covered sily cists between very finocy massive-xred weath Top has indepa calct in irreg masses. 17.0 Covered, patches of gray silty, noncelcrous claysone, and gray siltstone - letter about 5.0 from top. 2) 41.7 Siltstone, silty, massive, forms ledge locally weaths gray tooB has carb matter locally, few intermixed silty zones. 12.0-? Siltstone, blocky, dark gray, continuous with above but slope wash: softer, not in ledge. From base Siltstone ledge unit 2 down to is in gutter it is 50.0+ This time has marlstone above it, may or may not = ls in base Spring Creek section 27