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Toney Mountain volcano

Shield volcano 3595 m / 11,794 ft
West Antarctica,  , -75.8°S / -115.83°W
Current status: (probably) extinct (0 out of 5)
Toney Mountain volcano books
Typical eruption style: unspecified
Toney Mountain volcano eruptions: unknown, no recent eruptions No recent earthquakes
TimeMag. / DepthDistanceLocation

Background:

Toney Mountain in east-central Marie Byrd Land is a linear, E-W-trending volcanic massif with a 3-km-wide summit caldera and several satellitic cinder cones. A sample from the top of the felsic shield volcano gave a Potassium-Argon date of 0.5 million years ago. Some of the ash bands in the Byrd Station ice core deposited within the past 30,000 years may have been from Toney Mountain, and Holocene activity is possible (LeMasurier and Thomson 1990). Several small cinder cones occur along the crest of the 14-km-long massif, which is almost entirely mantled by glaciers.
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Smithsonian / GVP volcano information


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