undivided, Upper Cretaceous (NMKu;0)

Upper Cretaceous, undivided. Includes Virden Formation in northern Hidalgo County, Ringbone Formation in Hidalgo and Luna and Grant Counties, and locally Beartooth and Sarten, Mancos in Silver City area; Cenomanian - Maastrichtian for most part, although Beartooth is pre-Cenomanian

State	New Mexico
Name	undivided, Upper Cretaceous
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous
Original map label	Ku
Primary rock type	medium-grained mixed clastic
Secondary rock type	volcanic rock (aphanitic)
Other rock types	limestone
Lithologic constituents	Major Sedimentary > Clastic (Bed)no lith description on map Minor Sedimentary > Carbonate (Bed)no lith description on map
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]
Geographic coverage	Colfax - Grant - Hidalgo - Luna - McKinley - Mora - Sandoval - San Juan - San Miguel - Santa Fe - Sierra - Valencia