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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.

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Sunday, December 22, 2013
erosion, undercut bank

Dec. 10, 2013 | San Pedro River | Benson, AZ

A mesquite tree hangs precariously over the void created by collapsing walls of an arroyo leading to the San Pedro River north of Benson, AZ. Freshly collapsed wall sediments are evident in the channel below the tree. (Photo by Joe Cook)