McDougal Crater, one of many Quaternary maars in the Pinacate volcanic field, formed within darker lava flow units near the top of the crater wall. Lighter-colored pyroclastic surge deposits form the crater rim and playa deposits formed on the crater floor. Crystalline rocks of the Sierrita el Temporal range are visible beyond the upper right crater rim to the north.

Photo by Richard Waitt, 1988 (U.S. Geological Survey).

This image is made available as a Public Domain Work, but proper attribution is appreciated.

Keywords: crater | stratigraphy | geology | outcrop | maar | volcanic field

Pinacate