Owiyukuts Complex (Archean) exposed in northwestern Colorado overlain by the Proterozoic Uinta Mountain Group. Photo cropped from Matthews, 2009.
Landsat satellite image Medicine Bow Mountains, Wyoming. Cheyenne Belt trending NE-Sw below high peaks of the Snowy Range (compare with map below). Image from www.geology.com
Sketch map showing location of Cheyenne Belt in southeastern Wyoming. From Ward, 2010: www.colorado.edu/GeolSci/Resources/WUSTectonics/CheyenneBelt/index.html
Outcrop of anorthosite east of Bosler, Wyoming, Laramie Range.
Hand specimen of anorthosite showing laboradorensence.
Sunrise Mine ca. 1907. Photo courtesy of Wyoming Tales and Trails.