Tectonic Unit: DTrH
         Name: Harper Ranch
 
  Description: volcanic sandstone derived from andesitic and
               dacite volcanics and chert, minor basalt, andesite
               and dacite flows and pyroclastics, Devonian to
               Permian limestone blocks in upper Paleozoic to
               Triassic matrix; marine
 
    Formation: Intermontane Belt
                  Quesnell Terrane
                       DTr  Harper Ranch, Barslow
                       CP   Blind Cr.
               Omineca Belt
                  Quesnell Terrane
                       DTr  Harper Ranch
                       PP   Lay Range
 
    Age Range: Devonian - Triassic
  Maximum Age: 408.5 Ma
  Minimum Age: 208.0 Ma