Field Notebook: CO 1951a
Page 129
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Transcription
3,0 Sandstone, fine gr., massive weather orange brown. is heavily fossilpecked, Basal +4"s argill siltshm parting 3,14 Sandstone as above, bigger fossilpecks, locally pitted, same mud etc. Disconfl. 5,0 Silty claystone + argilaceous siltstone with bed hood about 1 light-gray finess 2.0 from base. Claystone above are red, below-gray, chiefly gray/tan along strike. the red claystone thins locally to 6/± with 1"green at top 12,8. Sandstone, fine to medium, variable in thickness. local silty zone at base & top. From 4 to at least 15" thick in 100 block. Disconfl. 6.5 Silty claystone, chiefly red some green mottled top & base Gastroliths in upper 1/2 8.5 Sandstone massive cross-lamin, fine to coarse with some aggl streams and red Jasper frags, under pea size at coarsest. Disconfl. 25,0 Alternating benches silty claystone and ledges argill siltstone, chiefly gray and gray well silty layers yellow-green & grey weather, minor red mottling really in low percent 13.0 Massive argill siltstn + fines ss red to green stone. 15,0 Silty claystone, +argill siltstn, red 62