Tectonic Unit: PCHA
         Name: Hyland
 
  Description: upper unit: blue-grey, apple-green and maroon
               slate with minor siltstone and sandstone; lower
               unit: interbedded graded sequence of sandstone,
               locally conglomeritic and shale with limestone in
               upper part; marine
 
    Formation: Foreland Belt
                  Arctic Alaska Terrane
                       PC   unnamed varicoloured clastic rocks and
                            carbonate surrounding Old Crow Batholith, 
                            Yukon
 
    Age Range: Upper Proterozoic - Lower Cambrian
  Maximum Age: 1000.0 Ma
  Minimum Age:  536.0 Ma