komatiite - meaning and definition. What is komatiite
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What (who) is komatiite - definition


komatiite         
[k?'mat???t]
¦ noun Geology a magnesium-rich extrusive rock, often with a characteristic texture of criss-crossing olivine crystals.
Origin
1960s: from Komati (a river in southern Africa) + -ite1.
Komatiite         
Komatiite () is a type of ultramafic mantle-derived volcanic rock defined as having crystallised from a lava of at least 18 wt% MgO.Le Bas, M.
Winnipegosis komatiite belt         
  • Dendritic clinopyroxene textures in massive Winnipegosis Komatiite flows. Ol = olivine, cpx = clinopyroxene, gl = glass. Both 'swallowtail' and 'feathery' clinopyroxene dendrites are visible.
The Winnipegosis komatiite belt is a long and wide greenstone belt located in the Lake Winnipegosis area of central Manitoba, Canada. It has no surface exposure and was identified based on geophysical signatures and drilling during mineral exploration by Cominco during the 1990s.

Wikipedia

Komatiite
Komatiite () is a type of ultramafic mantle-derived volcanic rock defined as having crystallised from a lava of at least 18 wt% MgO.Le Bas, M.