Tectonic Unit: CPO
         Name: undivided
 
  Description: intertonguing shelf carbonate, shale, chert and
               sandstone
 
    Formation: Omineca Belt
                  Ancestral North America
                       MP   Keno Hill
               Foreland Belt
                  Ancestral North America
                       C    unnamed units in Ogilvie Mts.
 
    Age Range: Carboniferous - Permian
  Maximum Age: 362.5 Ma
  Minimum Age: 245.0 Ma