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Experimental Phase Relations in Altered Oceanic Crust: Implications for Carbon Recycling at Subduction Zones

Martin, Laure; Hermann, Joerg


The phase relationships in altered mafic oceanic crust (K2O, CO2 and H2O bearing) have been investigated to constrain and quantify the processes of carbon transfer from the slab to the mantle wedge at subduction zones. We report experiments at 2·5–4·5 GPa and 700–900°C in which gas in the experimental charges is analysed by gas chromatography to constrain the volatile composition of the aqueous fluid or hydrous melt. A phengite-bearing epidote-eclogite with dolomite and/or magnesite is stable...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Journal of Petrology
DOI: 10.1093/petrology/egy031


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