GeoSnaps - Image of the Day
Geologic snapshots capturing Arizona’s geologic setting and mining history with a picture of the day from 1 January through 31 December 2013.
April 13, 2013 | Santa Catalina Mountains, Pima County, Arizona
High and low angle faults exposed in the Oracle Granite of the lower Tanque Verde Falls in the Santa Catalina core complex. (Photo by Jessica Rudd)