Terrane Unit : CC
             Name : Cache Creek 

      Description : Mississippian to Lower Jurassic oceanic volcanics  
                    and sediments, Upper Triassic island-arc volcanics 
                    and local accretionary prism melange.  Included   
                    are radiolarian chert, argillite and basalt,      
                    shallow water carbonate and alpine-type           
                    ultramafics.  The terrane was amalgamated by latest
                    Triassic time and  accreted to Ancestral North 
                    America in the Jurassic.  It is bounded on the east  
                    by the Teslin and Pinchi faults.  Permian         
                    fusulinid and coral faunas of Tethyan affinity are
                    not found in coeval, co-latitudinal cratonal rocks
                    suggesting an exotic origin.   

      Assemblages : MTrC Cache Creek, TrKU Kutcho                       

   Plutonic Rocks : DTruo oceanic ultramafics                          
 
         Age Range: Mississippian - Lower Jurassic
       Maximum Age: 362.5 Ma
       Minimum Age: 208.0 Ma