CRETACEOUS

-     Cretaceous rocks, undivided 
-     Uppermost Cretaceous intrusive rocks; restricted to Copper Flats area in 
         Sierra County
-     Uppermost Cretaceous andesite flows; restricted to southwestern area
-     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 
-     McRae Formation; Engle basin - Cutter sag area; Maastrichtian
-     Vermejo Formation and Trinidad Sandstone; Maastrichtian
-     Kirtland and Fruitland Formations; coal-bearing, coal primarily in the 
         Fruitland; Campanian to Maastrichtian
-     Pictured Cliffs Sandstone; prominent cliff-forming marine sandstone
-     Lewis Shale; marine shale and mudstone
-     Pierre Shale and Niobrara Formation
-     Fort Hays Limestone Member of Niobrara Formation
-     Mesaverde Group includes the Gallup Sandstone, Crevasse Canyon Formation, 
         Point Lookout Sandstone, Menefee Formation, and Cliff House Sandstone 
-     Cliff House Sandstone; transgressive marine sandstone; Campanian
-     La Ventana Tongue of the Cliff House Sandstone
-     Menefee Formation; mudstone, shale, and sandstone; coal-bearing
-     Point Lookout Sandstone; regressive marine sandstone in McKinley and 
         Sandoval Counties.  The lower, Hosta Tongue, of Point Lookout is transgressive 
         and is separated from main body by the Satan Tongue of Mancos Shale; 
         Santonian - Campanian
-     Satan Tongue of Mancos Shale 
-     Hosta Tongue of Point Lookout Sandstone; transgressive marine sandstone
-     Mulatto Tongue of Mancos Shale
-     Crevasse Canyon Formation; coal-bearing units are Dilco and Gibson Coal Members; 
         other members are Bartlett Barren, Dalton Sandstone, and Borrego Pass Sandstone 
         (or Lentil)   
-     Gallup Sandstone; generally regressive marine sandstone; Turonian
-     Gallup Sandstone and underlying D-Cross Tongue of the Mancos Shale; Turonian
-     Rio Salado Tongue of the Mancos Shale.  Overlies Twowells Tongue of Dakota 
         Sandstone; mapped only where Tres Hermanos Formation or the Atarque Sandstone 
         is present; mapped as Kdr in parts of Socorro County; Turonian