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Okmok Volcano, USA, Volcano photo
Okmok Volcano, USA

Steam rises in December 1980 from a cinder cone in Alaska's Okmok caldera.

Known only as Cone A, it is one of numerous unnamed pyroclastic cones within the 10-km-wide caldera.

Erosional furrows produce linear stripes on the flank of the cone.

Eruptions from Cone A in 1945 and 1958 produced lava flows, which issued onto the caldera floor.

Cone A erupted again six months after the date of this photo.

The wall of Okmok caldera forms the skyline ridge.

PHOTO SOURCE: Chris Nye 1980, Alaska Division of Geological & Geophysical Surveys, Alaska Volcano Observatory, courtesy of the Global Volcanism Program, Smithsonian National Museum of Natural History, used with permission.



NOTE: The information regarding Volcano on this page is re-published from other sources. No claims are made regarding the accuracy of Volcano information contained here. All suggestions for corrections of any errors about Volcano photos should be addressed to the copyright owner noted below the photo.



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This page was last modified 20-MAY-10
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