Articles | Volume 34, issue 2
Eur. J. Mineral., 34, 201–213, 2022
https://doi.org/10.5194/ejm-34-201-2022
Eur. J. Mineral., 34, 201–213, 2022
https://doi.org/10.5194/ejm-34-201-2022
Research article
31 Mar 2022
Research article | 31 Mar 2022

In situ reinvestigation of reaction phase A plus high-pressure clinoenstatite to forsterite plus water in the system MgO-SiO2-H2O (MSH)

Christian Lathe et al.

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Short summary
The equilibrium phase of A + HP clinoenstatite = forsterite + water was experimentally investigated at aH2O = 1 in situ. In cold subducting slabs, it is of relevance to transport water to large depths, initiating the formation of dense hydrous magnesium silicate (DHMS). At normal gradients, the huge water amount from this reaction induces important processes within the overlying mantle wedge. We additionally discuss the relevance of this reaction for intermediate-depth earthquake formation.