Tectonic Unit: mCr
         Name: undivided
 
  Description: fanglomerate, block breccia, conglomerate,
               brick-red sandstone, limestone, siltstone,
               sandstone; marine and nonmarine
 
    Formation: Foreland Belt
                  Ancestral North America
                       mC   Conglomeritic Slats Cr., "Roosevelt facies"
 
    Age Range: Middle Cambrian
  Maximum Age: 536.0 Ma
  Minimum Age: 517.2 Ma