Tectonic Unit: ODD
         Name: Donjek
 
  Description: khaki, quartz-rich, micaceous, calcareous
               siltstone and sandstone, slate, phyllite, schist,
               buff and green greywacke, volcanic sandstone,
               siltstone and argillite; basic flows, breccia,
               tuff, marble, limestone; marine
 
    Formation: Insular Belt
                  Craig Subterrane of Alexander Terrane
                       OD, COwv, OSwp, Psa
                       greywacke, phyllite, greenstone units in St.
                       Elias Mtns.
 
    Age Range: Ordovician - Devonian
  Maximum Age: 510.0 Ma
  Minimum Age: 362.5 Ma