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Precambrian gneiss, schist and pegmatite dikes

Close up of canyon wall showing exposed precambrian gneiss, schist and pegmatite dikes, Black Canyon of the Gunnison National Park, Colorado, USA

Colorado17A1694precambriangneissschistBlack Canyon of the GunnisonNational ParkUSABlack CanyongeologyruggedNorth AmericaNorth Americanlandscapescenicnobodycanyoncanyon wallsrockformationsgeologicpegmatite dikespegmatitevolcaniccloseupclose upwallbackgroundbackgrounds