Field Notebook: WY 1956
Page 15
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Transcription
6.0 Siltstone, clacy & silty claysone scattered sandgrains. A good "mudstone" if you imply it is a mixture of clay to sand size. Chieffy m3veooy 14.0 Silty claystone and some clygy siltstone, soft, weathers to grayish "popcorn" surface. Upper 3' it is gray, grading to black at top. Below becomes vericgated gray with dk red then red increased downward to underlying unit. 6.0 Sandstone, fine-grained, tabular in beds up to 1ft+, x 12m. Best Surface with "worm" mkd. few other surfaces mkd & some ripples, or but latter not well preserved. Weaths to prominent brown shelving ledge. Heavier beds distinguish it from rusty bed ledge above. 7.0? Siltstone, dacelly jugilleccous, carbonaceous, weathers gray white, platy, Irrey, inter- bedded with czub silty shale 7