Tectonic Unit: umPM
         Name: Mackenzie Mountains
 
  Description: shallow-water platformal assemblage of red and
               green mudcracked shale, siltsone and sandstone,
               gypsum and anhydrite, basinal limestone,
               rhythmite, nodular limestone, stromatolite reefs,
               platform carbonate grainstone, fluvial-deltaic
               orthoquartzite and mudstone, stromatolitic and
               agillaceous dolomite; marine and nonmarine
 
    Formation: Foreland Belt
                  Ancestral North America
                       mP   Mackenzie Mtns: Little Dal, Katherine,
                            Tigonankweine, Tsezotene
 
    Age Range: Middle and Upper Proterozoic
  Maximum Age: 1600.0 Ma
  Minimum Age:  570.0 Ma