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The land of maar (Alaska)

MaarMaar called relatively flat craters created by underground explosions. Commented James Bedzhet volcanologist from the University of Alaska Volcano Observatory: “The magma rises to the surface and at some point in contact with groundwater. At contact the water turns to steam, increasing in volume in 1000, which is a bombshell. “

Most maars have a diameter of 300 meters. Few of them reaching a width of up to 1.6 kilometers. The youngest of maar Native – 21,000 years. Age most of them ranges from 40,000 to 100,000 years. Read the rest of this entry »

 
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Posted by on June 3, 2013 in Historical, Mysterious

 

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