WHY A VOLATILES WORKSHOP?In the last decade, the GeoPRISMS program has led to immense progress on fundamental questions related to volatiles. However, challenges remain in understanding the storage, fluxes, and chemical interactions of volatiles, as well as the role they play in processes at and around plate boundaries. As GeoPRISMS draws to a close, it is time for the community to convene to reflect on progress made, synthesize current knowledge, and revisit outstanding questions.
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WHAT ARE THE WORKSHOP GOALS?
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WHAT ARE THE WORKSHOP THEMES?
- GLOBAL VOLATILE FLUXES: constrain total volatile outgassing, quantify amount of volatiles stored in and cycled among Earth's reservoirs, and characterize the mechanisms facilitating volatile storage and transport.
- VOLATILE IMPACT ON RHEOLOGY, SEISMICITY, AND CONDUCTIVITY: constrain the effect of water-rich phases such as serpentine on rheology and deformation at the slab interface.
- VOLATILES AND THE CRUST: understand the control of volatiles on the evolution of continental crust.
- VOLATILES AND VOLCANISM: understand the interactions between volatiles, crystals, and melt that drive changes in magma rheology and influence eruptive style.
WHAT ARE SOME OVERARCHING DISCUSSION QUESTIONS?
- How can we better link geochemistry, geophysics, and models (physics-based and/or machine learning) to better understand processes and potentially anticipate volcanic activity?
- To what extent do global-scale differences in volatile cycling drive measurable differences in volcanic behavior (e.g., eruption style, edifice density, eruption frequency)?
- What chemical and isotope (H, C, N, O, noble gases, etc.) fractionations and alterations are occurring during fluid transit through the crust? Can we identify these and/or correct for them?
- What factors contribute to a diversity of volcanism both regionally and globally? How do volcanoes behave across multiple eruption cycles, and how does this reflect their tectonic context?
- How do variations in subduction zone character lead to differences in volatile cycling?
- How do we relate observations of precursory surface gas emissions to magmatic processes driving eruption at depth?