Tectonic Unit: PTrA
         Name: undivided
 
  Description: andesitic to basaltic flows, breccia and tuff;
               felsic tuff, greywacke, shale, chert, conglomerate,
               limestone and metamorphic equivalents; marine
 
    Formation: Insular Belt
                  Alexander Terrane
                       PTr   Barlow Cove
 
    Age Range: Permian - Triassic
  Maximum Age: 290.0 Ma
  Minimum Age: 208.0 Ma