Field Notebook: CO 1951c
Page 27
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
3.0 Shale, dk grzy-black fissile, silty. 4 Bentonite. 2.12 Silty sh + shzlly siltstn., ferroginous siltstone layers in upper 1 foot 1 4.13 Interbedded Siltstone and silty shale chiefly shale in upper half, siltstone and ss+ in lower , SS- yellowish friable, Beds up to .4 4.14 Sandstone, massive x lzm, med-gr. bds' to 2.0 15.0 Irreg bedded fine SS in zltecountry, resistant + friable beds. Whole with local zones lamnce siltstone,dk. Worths-grey with Fe stain in some beds. 2.12 Similar to above but with shale partings + thin beds coming in and increasing clownyard in prop. to silt-sand. stady Lower 3.7 chiefly shldy siltstone 33.0 Partilly covered but hard beds protude. Interbedded silty shale, siltstone and ss sandstone. SS in beds 0.1 to 0.3 endless no fine gr. and freq most common in lower 1/2 upper 2/3 more shaly + siltstone detailed more common than SS. 3.8 Fine to med gr massive SS, friable 12