Oxidising agents in sub-arc mantle melts link slab devolatilisation and arc magmas
Abstract
Subduction zone magmas are more oxidised on eruption than those at mid-ocean ridges. This is attributed either to oxidising components, derived from subducted lithosphere (slab) and added to the mantle wedge, or to oxidation processes occurring during magma ascent via differentiation. Here we provide direct evidence for contributions of oxidising slab agents to melts trapped in the sub-arc mantle. Measurements of sulfur (S) valence state in...
Paper Details
Title
Oxidising agents in sub-arc mantle melts link slab devolatilisation and arc magmas
Published Date
Aug 29, 2018
Journal
Volume
9
Issue
1
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