V54A:
Transport of Volatiles from Mantle to Surface: Insights on Diffusion, Exsolution, and Migration of Fluids in Magmatic Environments from Natural Samples and Experiments II
V54A:
Transport of Volatiles from Mantle to Surface: Insights on Diffusion, Exsolution, and Migration of Fluids in Magmatic Environments from Natural Samples and Experiments II
Transport of Volatiles from Mantle to Surface: Insights on Diffusion, Exsolution, and Migration of Fluids in Magmatic Environments from Natural Samples and Experiments II
Session ID#: 8051
Session Description:
The transfer of volatiles (H2O, CO2, Cl, S, F) between reservoirs within the mantle, subducted oceanic crust and continental crust 1) influences magmatic processes, 2) modifies trace element and isotope signatures and 3) may change redox conditions. The physical and chemical properties of magmas are significantly influenced by diffusion and exsolution of volatiles during their ascent from the upper mantle through the crust to the surface. For instance, magma degassing may initiate volcanic eruptions, modulates magma viscosity (especially along the conduit) and, thus, affects the eruptive style. This session seeks insights from natural and laboratory observations involving volatile transfer and degassing. Cross-disciplinary studies (e.g. petrology with geophysics and/or geochemistry) providing temporal constraints, and/or involving volatile solubility, fluid and melt composition, isotope signatures and redox conditions are especially welcome.
Primary Convener: Sarah B. Cichy, Arizona State University, Tempe, AZ, United States
Conveners: Adrian Fiege, Univ of Michigan, Ann Arbor, MI, United States and Thomas Giachetti, University of Oregon, Eugene, United States
Chairs: Sarah B. Cichy, Arizona State University, Tempe, AZ, United States and Thomas Giachetti, University of Oregon, Earth Sciences, Eugene, United States
OSPA Liaison: Thomas Giachetti, University of Oregon, Earth Sciences, Eugene, United States
Cross-Listed:
- NH - Natural Hazards
- NS - Near Surface Geophysics
Index Terms:
1065 Major and trace element geochemistry [GEOCHEMISTRY]
3699 General or miscellaneous [MINERALOGY AND PETROLOGY]
7280 Volcano seismology [SEISMOLOGY]
8499 General or miscellaneous [VOLCANOLOGY]
Abstracts Submitted to this Session:
Gas-driven filter pressing in magmas: insights into in-situ melt segregation from crystal mushes (65595)
See more of: Volcanology, Geochemistry and Petrology