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Another area of particular interest does involve researchers interested in high pressure metamorphism of subducted oceanic crust and sediments - in the context of how much water might be recycled (in hydrous minerals) into the TZ. These late-stage magmas are mostly non-potassic and rich in HFSE and include both tholeiites and variably Si O-undersaturated types.Date: Monday, June 16, 2008 — Friday, June 20, 2008 Location: Busan, South Korea Web: the following session: Session SE59 Post-collision magmatism: plumes versus top-down plate tectonics? Examples – linked in space and time to recent and ongoing Tethyan collisions – include those in western and eastern Europe, eastern and southeastern Asia, and the Levant and northern Africa.Collectively, the record of mafic dyke swarms provides information on “the pulse of the Earth” - that is, the rhythm of mantle melting events through time, from minor rift-related events, to the largest known igneous events (LIPs) on the planet extruding millions of km Date: Sunday, August 17, 2008 — Friday, August 22, 2008 Location: University of Iceland, Reykjavik, Iceland Web: the following sessions: Mantle plumes and plume-ridge interactions Convenors: B. Trønnes ([email protected]) This session is dedicated to geodynamic issues, including mantle convection, the origin and evolution of plumes, mantle melting, melt transport and along-axis melt variability.
Finally, palaeontological studies of the impact of volcanism on flora and fauna and cross-disciplinary studies combining evidence from the ocean sedimentary and land records are encouraged.The following observations can be made concerning the origin of these upper mantle plumes: They are small-scale convective instabilities within the upper mantle beneath Europe which appear to originate in the Transition Zone (410-660km depth) There is a strong correlation between the location of the “upwellings” and lithospheric architecture – suggesting some form of top-down control.