Dear colleagues, We invite you to join us for our session "GMPV4.2. Decoding Orogenic Processes: Associated Fluid and Mass-Transfer Processes" at EGU 2025 in Vienna. Our session focuses on the mechanisms, timing, and consequences of the metamorphic and igneous processes that drive mass-transfer between the slab, mantle wedge, and arc. In subduction zones, advective mass transfer is driven by the migration of aqueous fluids produced by metamorphic dehydration and slab or melange melts. Partitioning of mobile from immobile elements in the slab dictates which elements recycled back to surface reservoirs through volcanic arcs and those which are subducted into the lower mantle. We invite contributions from petrology, geochemistry, and isotope geology that are aimed at deciphering micro to macro scale processes in the slab and arc to reconstruct geochemical cycles at convergent margins. Invited speaker: Enrico Cannaó - Deep recycling of elements beyond the arc. Abstract submission is open until Jan. 15 2025. For more information see: https://meetingorganizer.copernicus.org/EGU25/session/53960<https://meetingorganizer.copernicus.org/EGU25/sessionprogramme/GMPV> Sincerely, Jesse Walters & Jie Xu Jesse B. Walters Ass.-Prof. of Petrochronology NAWI Graz Geocenter University of Graz