Slab-Mantle Wedge Interactions at Subduction Zones
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Quantifying the chemical reactions that result from the recycling of tectonic plates at subduction zones is required to ultimately model the differentiation of our planet and its unique evolution among the terrestrial planets in the solar system. Through the study of rare exhumed samples from the mantle wedge and high-pressure and temperature experiments, our research seeks to better quantify these reactions.
With funding from the National Science Foundation (NSF EAR-1447342), we are presently investigating the Higashi-Akaishi peridotite, an slice of a supra-subduction zone peridotite, exhumed from a paleo-mantle wedge in Japan. Our research focuses on the depth of formation of hydrous minerals in the peridotite body to understand the transfer of fluids from the subducting plate to the overriding mantle, the oxidation state of the minerals in the peridotite body, and interrogating the possible evidence of sediment melting. |
Our research on this subject has lead to a collaboration with the NSF Frontiers in Earth Systems Dynamics (FESD) "The Dynamics of Earth System Oxygenation" project at ASU. For more information, see the ASU FESD project website.
Related Publications/Conference Proceedings
M. Guild, C. Till, R. Hervig, S. Wallis, 2015, Boron Isotopic Compositions of High Pressure Hydrous Phases from the Slab-Mantle Wedge Interface, EOS AGU Fall Meeting Abstract V43A-3096
M. Guild*, C. Till, R. Hervig, S. Wallis, 2016, Depth of Chlorite Formation: Quantitative Determination Using Boron Isotopes, Goldschmidt, Session 07b, Abstract #3067.
Related Publications/Conference Proceedings
M. Guild, C. Till, R. Hervig, S. Wallis, 2015, Boron Isotopic Compositions of High Pressure Hydrous Phases from the Slab-Mantle Wedge Interface, EOS AGU Fall Meeting Abstract V43A-3096
M. Guild*, C. Till, R. Hervig, S. Wallis, 2016, Depth of Chlorite Formation: Quantitative Determination Using Boron Isotopes, Goldschmidt, Session 07b, Abstract #3067.