Santa Catalina Mountains, Pima County, Arizona | Santa Catalina Mountains forerange ptygmatic folds - an irregular lobate fold - in the pegmatitic gneiss at Soldier Canyon (Photo by Jon Spencer)
Photographer: Jon Spencer
Photo Date: circa 2013
Photo Location Accuracy: Approximately Located
Photo Tags: Soldier Canyon, Tertiary, Proterozoic, gneiss, pegmatite, metamorphic core complex, Santa Catalina Mountains, folds