Field Notebook: CO 1951c
Page 33
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Transcription
Colorado Springs area, Section on Rt 338, Bear Cr. road cut in vertical strata #1 Dakote - 0 Top does not include transition zone Slope wash. 40.6 Massive, fine- to medium grained ss, cross- lamimated. Buff weathered. Rippled bedding places locally - bedding 1 to 4" average. N. 3.6 Clay, silty, and argillaceous siltstone, Upper 1.0 silty quartzclay with pezzize Fe blobs remainder dk-grzzy silty clstn+argill stlstn with 1 or 2 beds lit gr Siltstn, v fine ss about 0.2 thick 4.2 Interbedded light gray, hard, fine ss, beds .4 to 1.0+, and dark silty to sandy sh and dk argill. siltstone. 35.5 Sandstone, massive & x lam. channels of fine to med cpu., fine predom. a few slightly zone btw channels, Weathers Fe brwn. locally coarser at base. 0.8 Clay, plastic, silty, weather brown, 5.8 Dk gray to black, plastic with silty clay and beds + laminic siltston Most silty in upper 2.0, where silt predominates. Lower 3.6 scattered 1/2" beds +lzmize silt, 1/4"beconite at base. 8.5 Dk gray to black plastic clay, with