| Session Details
|
| Section |
SE - Solid Earth Sciences
|
| Session Title |
New Perspectives On Arc Magmatism In Asia |
| Main Convener |
Prof. Carlo Arcilla (University of the Philippines Diliman, Philippines)
|
| Co-convener(s) |
Dr. Ulrich Knittel (National Taiwan University, Taiwan)
|
| Session Description |
In global scale, arc magmatism is estimated to contribute more than 20% of the current terrestrial magmatic products and is responsible for elemental recycling from mantle to crust along convergent margins. This complex process is primarily attributed to flux melting of the mantle wedge due to solidus lowering by slab-derived fluids where the onset and location are thought to be controlled by the mantle wedge thermal structure. The typical geochemical signatures for SSZ-related rocks have been widely accepted to be due in part to contributions from variably fertile mantle and slab components (e.g. basaltic crust and sediment). Although extensive studies have been made in accessing the slab-derived contributions to arc magmas, recent advances from more extensive and in depth petrologic and geochemical studies on arc eruptives and HP/UHP rocks, coupled with results from analogue, thermomechanical numerical modeling and experimental studies, have questioned some of the long-held canonical views on arc magmatism such as the nature of mass transfer from slab to mantle. This session hopes to provide opportunities to present and discuss new ideas pertaining to arc magmatism and other subduction-related processes. We invite researchers who are interested in current research in subduction-related processes to contribute in an attempt to introduce and test new models in explaining the diverse but consistent geochemistry of SSZ-related rocks. |
