Field Notebook: CO 1952d
Page 23
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Skyline hogback - notes Recheck of section for bentonites shows that one at base of main clay - Taylor/Wazza Section 1951 is not well enough defined to be counted. May only be stained plastic clay. However on s on hogback, Vic. Clay mines the exposed clay bed does have a bentonitic layer 3.5 above base. This clay was measured and sampled in summer 1949 with Colton Belden, etc crew from field course. This trace of the middle beat zone seen at several places where Taylor/Wazza section taken. Disconformity:- There is definitely, one over the x-bedded fine to cgl, brown ss with lenses gray sands that overlies more typical Lytte-type coarse to cgl white ss. Contact between this brown-ss unit and typical Lytle is not sharp here, as it is along Grape Creek, but change takes place in mixed zone indicating some reworking of underlying lightgrey Lytle-like ss. Locally fairly sharp contact featuring some concret, cgl in base brown lens. The