Greenhorn Formation and Carlile Shale (NMKgc;0)

State	New Mexico
Name	Greenhorn Formation and Carlile Shale
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous
Original map label	Kgc
Comments	According to NM008 reference: Greenhorn Formation no longer used in New Mexico. Replace with Bridge Creek Limestone Member of Mancos Shale. Greenhorn (Limestone) may be considered a member of the Mancos Shale. Carlile Shale is one of 4 Formations in the Colorado Group.
Primary rock type	shale
Secondary rock type	fine-grained mixed clastic
Other rock types	limestone
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Shale (Bed) Minor Sedimentary > Carbonate > Limestone (Bed) Sedimentary > Clastic > Mixed-clastic > Sandstone-Mudstone (Bed)
Map references	Anderson, O.J., Jones.G.E., and Green, G.N., compilers, 1997, Geologic map of New Mexico: U.S. Geological Survey Open-File Report 97-52. [http://pubs.er.usgs.gov/publication/ofr9752]
Unit references	Anderson, O.J., Jones.G.E., and Green, G.N., compilers, 1997, Geologic map of New Mexico: U.S. Geological Survey Open-File Report 97-52. [http://pubs.er.usgs.gov/publication/ofr9752] U.S. Geological Survey, 1992, Stratigraphic Nomenclature Databases for the United States, its possessions and territories: U.S. Geological Survey Digital Data Series DDS-6 (CD). [http://pubs.er.usgs.gov/publication/ds6] USGS Geologic Names Lexicon (GEOLEX) [http://ngmdb.usgs.gov/Geolex/]
Geographic coverage	Colfax - Taos