Solid Earth Sciences (S)
Session Sub-categoryComplex & General(CG)
Session IDS-CG51
TitleRole of volatiles on Earth and planetary dynamics
Short TitleEarth and planetary volatiles
Main Convener NameTakayuki Ishii
AffiliationBavarian Research Institute, University of Bayreuth
Co-Convener 1NameEiji Ohtani
AffiliationDepartment of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University
Co-Convener 2NameMichihiko Nakamura
AffiliationDivision of Earth and Planetary Materials Science, Department of Earth Science, Graduate School of Science, Tohoku University
Co-Convener 3NameBjorn Mysen
AffiliationGeophysical Laboratory, Carnegie Inst. Washington
Session LanguageE
ScopeThis session addresses how volatile species affect dynamics of the
Earth and planets from natural observations, laboratory experiments, and
numerical modeling in the temperature, pressure, and oxygen activity
range from the early stage of the planet formation to the present. The
volatiles can be critical in zones of magma storage and ascent, mantle
upwelling and melting in the fluid-enriched subduction zones, in the
mantle transition zone, in the lower mantle, in the core-mantle boundary,
and in Earth and planetary cores. However, volatiles affect properties
and processes differently depending on their pressure, temperature, and
redox conditions, which vary in time and space.
This session aims to address how volatiles control the dynamic
processes of the Earth and planets, governed by their geophysical and
geochemical properties. We welcome papers dealing with geological and
laboratory observations coupled with numerical modeling on the role of
volatiles. The topics include (1) Stability relations, chemical and
physical properties of crystalline, molten and fluid phases,
partitioning of volatiles among these phases, (2) Rheological and other
physical properties of minerals, and the effects of intergranular fluid
on the properties, (3) Volatiles and dehydration induced seismicity and
volcanism in various tectonic regions including subduction zones, and (4)
Effects of volatiles in numerical simulation of geo-tectonics, and (5)
Magma outgassing and its control of volcanic eruption dynamics.
Presentation FormatOral and Poster presentation
Joint Session withAGU
Invited AuthorsAnja Allabar (University of Tuebingen)
Daniel James Frost (University of Bayreuth)
Rosie Ellen Jones (University of Oxford)
Bernard Marty (CRPG Centre de Recherches Pétrographiques et Géochimiques)
TimePresentation NoTitlePresenterAbstract
Oral Presentation May 30 PM1
13:45 - 14:00SCG51-01Constraining the degassing rate of the mantle since 3 Ga using the deficit of xenon-129 in the ancient atmosphereBernard Marty
14:00 - 14:15SCG51-02Investigating volatile cycles in the terrestrial mantle by incorporating He and Ar isotopes into geodynamical models of mantle convectionRosie Ellen Jones
14:15 - 14:30SCG51-03Fluid circulation in the forearc mantle wedge inferred from the dihedral angle in an olivine-H2O-NaCl systemYongsheng HUANG
14:30 - 14:45SCG51-04The oxygen fugacity of serpentinites: implications for subduction zone redox evolutionLisa Eberhard
14:45 - 15:00SCG51-05Experimental study of the effect of composition on water solubility in natural silicate meltsShigeru Yamashita
15:00 - 15:15SCG51-06Deep mantle volatile cycle and plate tectonics: Impact to the climate evolutionTakashi Nakagawa
Oral Presentation May 30 PM2
15:30 - 15:45SCG51-07The nature of water induced small degree melts in the deep mantleDaniel James Frost
15:45 - 16:00SCG51-08Phase separation of hydrous Vesuvius melt: vesicle nucleation or spinodal decomposition?Anja Allabar
16:00 - 16:15SCG51-09Role of water on dynamics in the lower mantle and core-mantle boundary regionsEiji Ohtani
16:15 - 16:30SCG51-10Stability of Fe-bearing hydrous phases and element partitioning in the system MgO-Al2O3-Fe2O3-SiO2-H2O in Earth’s lowermost mantleHongsheng Yuan
16:30 - 16:45SCG51-11Laboratory Micro-Seismicity during Serpentinite Deformation as a Potential Analogue for Lower Wadati-Benioff Plane SeismicityJulien Gasc
16:45 - 17:00SCG51-12Water transport and mixing in the whole-mantle scale convectionTakeo Kaneko
Presentation NoTitlePresenterAbstract
Poster Presentation May 30 AM2
SCG51-P01Permeability prediction of porous media with the finite difference Stokes solver LaMEMPhilipp Eichheimer
SCG51-P02Grain growth-induced fluid localization and permeability reductionWakana Fujita
SCG51-P03Pargasite stability in the upper mantle at H2O-undersaturated conditionsMarija Putak Juricek
SCG51-P04Constraining the water content at the top of the mantle transition zone with the elasticity of wadsleyite and olivineZhongqing Wu
SCG51-P05Single crystal elasticity of Fe-bearing phase E by Brillouin spectroscopyNiccolo Satta
SCG51-P06Discovery of two hexagonal phases in (Fe,Al)OOH under the P-T conditions of the deep lower mantleLu Liu
SCG51-P07Effect of grid resolution on tectonic regimes in global-scale convection modelsEnrico Marzotto
SCG51-P08A 3-D crust and uppermost mantle electrical conductivity model of subduction zone beneath NE JapanMasahiro Ichiki
SCG51-P09The conditions of sublithospheric diamond formation constrained from ferric iron-rich exsolution from ferropericlase inclusions.Caterina Melai
SCG51-P10Probing the variation of the oxygen fugacity in diamond anvil cells using the Fe-Ir alloy as redox sensorSerena Dominijanni
SCG51-P11Goethite behavior at Earth's lower mantle conditionsEgor Gennadievich Koemets
SCG51-P12The oxygen content of sulphides in the mantle and a geothermometer for diamond formationSumith Abeykoon