Field Notebook: CO 1951a
Page 27
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
7' so: massive: mass-bedded: fine to med gs with layers of cgl so, up to .6' thick: separally scattered throught: so light gray to white on fresh surfaces, with darker coloured lenses where carbonaceous matter present more or less sparsely: only locally resistant weathering: lighter gray with yores of iron stain. cgl marks channel bottoms? at locality measured: 2 pronounced cgl layers: one at top: one at 5' from top: bottom layer thicker, contains frags. of chest and so mostly so & chest + grits in cgl. Disconformity - the big one 3'->4' silty clay: weathered section shows varicolored silty clay w/ pinky greens/b brown yellow gray layers in that order: becomes more silty in lower part where layers of silstone are interfedded with fine grained sandstone. This appears to be a local disconformity at the top of this interval. Buttwel! 49' fine to med gs so massive mass bedded + light gray to white: weathering light gray w/ & Fe stain along some surfaces and along joint planes. Puttled in lower 12: put caused by; 11't so: med -> fine gr. friable: few resistant beds: continualmally pitted so above but less resistant. interval includes several resistant beds with sand covered interval btw. these beds. Putting close out 5' from base & basal 2' no med gs brown weathering x - land as Discont next disc, or variegated clays below. 11