Niobrara Formation and Carlile Shale (WYKnc;0)

NIOBRARA FORMATION (Kn) AND CARLILE SHALE (Kcl). NIOBRARA FORMATION (AGE ABOUT 83 Ma)--Light-colored limestone and gray to yellow speckled limy shale. CARLILE SHALE--Dark-gray sandy shale; Sage Breaks Member at top; Turner Sandy Member in middle.

State	Wyoming
Name	Niobrara Formation and Carlile Shale
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous-Late
Original map label	Knc
Primary rock type	shale
Secondary rock type	fine-grained mixed clastic
Other rock types	limestone
Lithologic constituents	Major Sedimentary > Carbonate > Limestone Sedimentary > Clastic > Mudstone > Shale
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	Crook - Niobrara - Weston