The Cerro Colorado maar, in the Pinacate volcanic field 24 km NE of Pinacate Peak, contains a 1-km-wide crater formed by explosions on a nearly flat surface. Distribution of ejecta by prevailing winds produced a hill on the side of the crater opposite this steep, 110-m-high crater wall. The ejecta include fragments of underlying granitic and metamorphic rocks.

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: stratigraphy | outcrop | crater | geology | maar

Pinacate