Cody Shale (WYKc;0)

CODY SHALE (AGE 78 TO 83 Ma) northern Yellowstone area--Gray to brown shale and siltstone; north and south Wyoming--Dull-gray shale, gray siltstone, and fine-grained gray sandstone.

State	Wyoming
Name	Cody Shale
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous-Late (78-83 Ma)
Original map label	Kc
Primary rock type	shale
Secondary rock type	siltstone
Other rock types	sandstone
Lithologic constituents	Major Sedimentary > Clastic > Siltstone Sedimentary > Clastic > Mudstone > Shale Minor Sedimentary > Clastic > Sandstone
Map references	Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey. [http://pubs.er.usgs.gov/publication/ofr83802]
Unit references	Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey. [http://pubs.er.usgs.gov/publication/ofr83802]
Geographic coverage	Big Horn - Carbon - Converse - Fremont - Hot Springs - Johnson - Natrona - Park - Sheridan - Sublette - Sweetwater - Teton - Washakie