Terrane Unit : TU
             Name : Taku

      Description : Variably metamorphosed upper Paleozoic and        
                    Triassic basalt, local acid volcanics, carbonate, 
                    pelite and Permian crinoidal limestone.  Jurassic 
                    to Cretaceous metamorphosed sediments and        
                    volcanics are similar to the Gambier              
                    (Gravina-Nutzotin) Assemblage.  The stratigraphic 
                    base of the terrane is unknown and relationships  
                    with other terranes are obscured by intrusions and
                    metamorphism, except where separated by the Sumdum
                    Fault from the Nisling Terrane to the east        

      Assemblages : PKT Taku                                          

   Plutonic Rocks : None                                              

         Age Range: Permian - Upper Triassic                      
       Maximum Age: 290.0 Ma
       Minimum Age: 208.0 Ma