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Earth and Space Sciences · 术语表

什么是 Fertile and residual mantle?

又称: fertile mantle · residual mantle

Definition 7.2 University Earth and Space Sciences — Year 2 · 第 7 章 — Melting the Mantle

A fertile mantle is a peridotite, typically a lherzolite, that still contains the clinopyroxene and aluminous mineral from which basalt is made. A residual mantle is the peridotite left behind once a melt has been extracted from it: poorer in clinopyroxene, aluminium, calcium and the incompatible elements, richer in olivine and with a higher Mg number.

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