GMPV
Geochemistry, Mineralogy, Petrology & Volcanology

#EGU22 session in the spotlight: Mass transfer in subduction zones: Metamorphism, fluids, and melts

#EGU22 session in the spotlight: Mass transfer in subduction zones: Metamorphism, fluids, and melts

How to better start the new year than with submitting your abstract to #EGU22? In case you still did not find the right session yet, we have another great session in the spotlight today – GMPV 2.2Mass transfer in subduction zones: Metamorphism, fluids, and melts“, which focusses on the fundamental role fluid and melt expulsion from the slab plays in subduction zones. This interesting session is organized by early-career researchers Jesse Walters, Hugo van Schrojenstein Lantman, Melanie Finch, Eirini Poulaki, and Isabelle Genot.

The conveners say:

Subduction is one of the primary mechanisms of fluid and element cycling between the surface and mantle in the Earth. Metamorphism of the subducting plate drives the expulsion of fluids and melts, during which some elements are preferentially removed from the slab, whereas others are retained and deeply subducted. Additionally, slab fluids and melts are responsible for the generation of arc magmatism, and influence the mechanical behavior of the subduction zone system. Fragments and/or diapirs of rocks at the slab-mantle interface are also extracted from the subducting plate through tectonic means. Combined, these processes highlight the fundamental role advective processes play in subduction zones.

A folded vein of albitized jadeitite (center) at the contact between serpentinite mélange matrix and a metabasite block on the island of Syros, Greece. These veins represent the pathways of fluids that pass through the slab-mantle interface.

Our session hopes to highlight the interconnectedness of metamorphic, metasomatic, magmatic, and structural processes in the subduction zone system, and we invite abstracts from the petrology, geochemistry, geodynamics, tectonics, and geochronology communities. We especially encourage studies that constrain the conditions, durations, and geochemical evolution of metamorphic, metasomatic, and magmatic processes leading to the transfer of material from the slab into the mantle wedge, forearc, arc, and deep mantle. We encourage participation from scientists from all backgrounds and levels of experience.

You can submit your abstract to this session now until January 12th following this link!

Franziska Keller is PhD student at the Institute for Geochemistry and Petrology, at ETH Zürich. Her current work focuses on the understanding of long-term petrological cycles in silicic calderas of Japan applying different petrological and geochronological techniques.


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