The Mono-Inyo craters produced explosive eruptions and effusive lava flows. The pumice layers above the bottom of the pen originated from the South Deadman vent of Inyo Craters about 600 years ago. Interbedded finer layers record brief pauses during the course of the eruption.

Photo by Larry Mastin, 1986 (U.S. Geological Survey).

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

Galleries: Ash Plumes and Ashfall

Keywords: geology | stratigraphy | tephra | deposit | pumice

Mono-Inyo Craters