Tectonic Unit: Dv
         Name: Rocky Mountains
 
  Description: amygdaloidal basalt of Devonian age;
               associated with Rocky Mountains Assemblage (CDR).
 
    Formation: Omineca Belt
                  Ancestral North America
               Foreland Belt
                  Ancestral North America
 
    Age Range: Devonian
  Maximum Age: 408.5 Ma
  Minimum Age: 362.5 Ma