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Globally, our observations link slab inputs to oxidation of the mantle wedge

Modified from Kelley & Cottrell , Science, 2009; Techniques in Cottrell et al, Chemical Geology, 2009. Globally, our observations link slab inputs to oxidation of the mantle wedge. Locally, degassing & crystallization do not (ubiquitously ) oxidize magmas.

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Globally, our observations link slab inputs to oxidation of the mantle wedge

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  1. Modified from Kelley & Cottrell, Science, 2009; Techniques in Cottrell et al, Chemical Geology, 2009 Globally, our observations link slab inputs to oxidation of the mantle wedge

  2. Locally, degassing & crystallization do not (ubiquitously ) oxidize magmas If < 75% S is speciated as 6+, then degassing SO2 will lead to reduction.

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