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Microdiamond
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
A rough diamond less than 0.5 mm in diameter.
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Mid-ocean ridge, английский
A continuous chain of underwater moun- tains along the sea floor that mark the volcanic centers from which new oceanic crust is formed from magma being brought up by convection from the mantle. the so- lidified magma forms basalt, which spreads away along both sides of the ridge to form new oceanic crust.
Melt depletion, английский
An igneous process by which melt is re- moved, leaving a residual rock that is more refractory than the original starting composition.
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