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geologyboy: Aniakchak Caldera, pictured here, formed during an enormous explosive eruption that expelled more than 50 km3 of magma about 3,450 years ago. The caldera is 10 km in diameter and 500-1,000 m deep. Subsequent eruptions formed domes, cinder cones, and explosion pits on the caldera floor. It’s in the Aleutian Range of Alaska, USA.

geologyboy:

Aniakchak Caldera, pictured here, formed during an enormous explosive eruption that expelled more than 50 km3 of magma about 3,450 years ago. The caldera is 10 km in diameter and 500-1,000 m deep. Subsequent eruptions formed domes, cinder cones, and explosion pits on the caldera floor.

It’s in the Aleutian Range of Alaska, USA.

(via sincerelyscience)



Posted on Thursday, February 23, 2012 | 17 notes
· #earth
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