Cr-spinel records metasomatism not petrogenesis of mantle rocks

Volume: 10, Issue: 1
Published: Nov 8, 2019
Abstract
Mantle melts provide a window on processes related to global plate tectonics. The composition of chromian spinel (Cr-spinel) from mafic-ultramafic rocks has been widely used for tracing the geotectonic environments, the degree of mantle melting and the rate of mid-ocean ridge spreading. The assumption is that Cr-spinel’s core composition (Cr# = Cr/(Cr + Al)) is homogenous, insensitive to post-formation modification and therefore a robust...
Paper Details
Title
Cr-spinel records metasomatism not petrogenesis of mantle rocks
Published Date
Nov 8, 2019
Volume
10
Issue
1
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