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Magmas from the mantle (co-sponsored by the VGP section of AGU)
Convener: Sally Gibson  | Co-Convener: Nicholas T. Arndt 
 / Tue, 14 Apr, 10:30–12:00
 / Attendance Tue, 14 Apr, 17:30–19:00

This session focuses on the physio-chemical controls involved in generation of melt from the mantle, including mid-ocean ridges, intraplate and subduction settings. Questions to be discussed include: whether primary melts form in the convecting and/or lithospheric mantle; the temperature and composition of melt source regions; volatile contents; the role of upwelling mantle plumes and/or lithospheric mantle and the overlying crust as a source or control on the nature of surface magmatism. Contributions from the fields of geochemistry, petrology, volcanology, geophysics and geodynamics will be welcome.