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komatiite

   Also found in: Wikipedia 0.03 sec.
komatiite [kō′mäd·ē‚īt]
(petrology)
A mantle-derived igneous rock with a high content of magnesium, particularly magnesium oxide.
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This tells us that the deep source where the komatiite came from, down near the boundary between the Earth's core and mantle, was gradually gaining platinum over time," he said.
Alien platinum 'stirred' into Earth's interiors 1.5 billion years by Asian News International
Komatute units can be tens or even hundreds of metres thick and can be traced continuously for up to 20 km, indicating that komatiite eruptions were major events during the Precambrian.
Igneous rock associations 10. Komatiites by Dostal, Jaroslav / Geoscience Canada
Scarfe, has shown that komatiite can be created at much higher pressures--and hence depths in the earth --than was commonly believed.
Under the volcano: lava in the lab by Weisburd, Stefi / Science News
 
 
 
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