Tectonic Unit: Q
         Name: undivided
 
  Description: none
 
    Formation: Insular Belt
                  Q   Offshore sediments
               Foreland Belt
                  Q   in Old Crow Basin and in southermost Rocky
                      Mountain Trench
 
    Age Range: Quaternary
  Maximum Age: 1.6 Ma
  Minimum Age: 0.0 Ma