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.
Check out previous GeoSnaps/Images of the Day.
December 6, 2013 | Santa Catalina Mountains | Pima County, Arizona
AZGS's Jon Spencer with research scientists of the US Geological Survey examining fanglomerates - coarse-grained alluvial fan deposits - in the Santa Catalina Mountain foothills, north of Tucson. (Photo by Janel Day)