 EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes
and phenomena which shape our planet and our lives. EPOD will collect and
archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


 Archive - Ubehebe Crater

   December 11, 2021

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   Every weekend we present a notable item from our archives.

   This EPOD was originally published July 4, 2016.

   Photographer:  Dave Lynch
   Summary Author:  Dave Lynch  July 2016 Viewer's Choice

    Ubehebe Crater, shown at top, lies at the north end of the
    Cottonwood Mountains in  Death Valley National Park, California.
   Only about a half mile across (0.8 km) and a few hundred feet deep,
   it's nonetheless one of the most beautiful and accessible volcanoes in
   the world. It was formed by a  phreatomagmatic eruption, in which
   upward moving  magma encountered subsurface water. The water flashed
   into steam and the resulting explosion fractured existing overlying
   rock and expelled massive amounts of sediment and bits of  lava
   called  lapilli. While there are countless volcanic lapilli in the
   area, no surface magma flow occurred. Another smaller volcanic crater,
   Little Ubehebe (at middle), is found nearby. Satellite imagery (bottom)
   show a dark blanket of ejecta covering the area. The  Ubehebe
   volcanics are relatively young, 800 – 7000 years old, though the exact
   age remains uncertain. Photos taken on February 8, 2016.
     * Ubehebe Crater, California Coordinates: 37.010148 -117.450657

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