Tectonic Unit: NTS
         Name: Skonun
 
  Description: calcareous sandstone, sand, shaly mudstone; minor
               conglomerate, lignite; marine and nonmarine
 
    Formation: Insular Belt
                  MPT  Skonun
 
    Age Range: Neogene
  Maximum Age: 23.3 Ma
  Minimum Age:  1.6 Ma