Solid Earth Sciences(S)
Session Sub-categoryGeochemistry(GC)
Session IDS-GC48
TitleVolatiles in the Earth - from Surface to Deep Mantle
Short TitleVolatiles in the Earth
Main Convener NameTakeshi Hanyu
AffiliationJapan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics
Co-Convener 1NameGray E Bebout
AffiliationLehigh University
Co-Convener 2NameHirochika Sumino
AffiliationDepartment of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo
Co-Convener 3NameYuji Sano
AffiliationDivision of Ocean and Earth Systems, Atmosphere and Ocean Research Institute, University of Tokyo
Session LanguageE
ScopeVolatiles play an important role in the dynamical and chemical processes in the Earth. The presence of volatiles drastically changes mineral stability and rheological behavior of the rocks. Chemical fractionation, such as partial melting, hydration, and dehydration are controlled by volatiles in the rocks. Volatiles enhance the production of magmas and drive their ascent and volcanic eruption. The atmosphere and hydrosphere have been generated by variety of degassing events from the mantle through volcanism. Some volatiles in the Earth's surface have been suggested to be recycled back into the mantle beyond subduction zones. Although the significance of volatiles in the Earth's evolution has been recognized, each of these processes is poorly constrained. We therefore welcome contributions from experimental, observational, and modeling studies that help shed light on the behavior, chemical/physical characteristic, and flux/budget of volatiles, such as hydrogen, carbon, nitrogen, noble gases, halogens, and sulfur. We encourage studies linking the behavior of multiple volatile elements and their isotopic compositions. Studies investigating the linkage between volatile and solid geochemical tracers, the phase equilibria of volatile-bearing mantle assemblages, and the effect of volatiles on the physical properties of the mantle are also welcome.
Presentation FormatOral and Poster presentation