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I'm a consulting geologist for a small company in the Denver area. I study problems related to active tectonics, using geomorphology, structural geology and remote sensing.

Friday, December 01, 2006

the bomb

finally downloaded pics from my camera... here's a very large lava-bomb that was ejected during an eruption at dish hill in the mojave desert. the somewhat aerodynamic shape is formed when the red-hot and still fluid blob is shot into the air. contact with the cold atmosphere allows the blob to 'freeze' mid-air and fall to earth as a solid "bomb". think about being close to an eruption when 100 pound smoking-hot chunks of rock are getting lobbed out the top of a volcanic vent... they must leave some impressive craters when they hit. this one actually broke in half; i found the two halves about 5 feet from each other and fit them back together... the fracture was perfectly preserved allowing a tight fit of the two pieces... that hammer is about 16 inches long.


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