固体地球科学(S)
セッション小記号固体地球化学(GC)
セッションIDS-GC40
タイトル和文Volatile Cycles in the Deep Earth - from Subduction Zone to Hot Spot
英文Volatile Cycles in the Deep Earth - from Subduction Zone to Hot Spot
タイトル短縮名和文Volatile Cycles in the Deep Earth - from Subduction Zone to Hot Spot
英文Volatile Cycles in the Deep Earth
代表コンビーナ 氏名和文角野 浩史
英文Hirochika Sumino
所属和文東京大学大学院総合文化研究科広域科学専攻相関基礎科学系
英文Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo
共同コンビーナ 1氏名和文羽生 毅
英文Takeshi Hanyu
所属和文海洋研究開発機構 地球内部物質循環研究分野
英文Japan Agency for Marine-Earth Science and Technology, Department of Solid Earth Geochemistry
共同コンビーナ 2氏名和文佐野 有司
英文Yuji Sano
所属和文東京大学大気海洋研究所海洋地球システム研究系
英文Division of Ocean and Earth Systems, Atmosphere and Ocean Research Institute, University of Tokyo
共同コンビーナ 3氏名和文Gray E Bebout
英文Gray E Bebout
所属和文Lehigh University
英文Lehigh University
発表言語E
スコープ和文Volatiles play an important role in the geodynamics and chemical differentiation in the mantle and crust by drastically changing mineral stability and rheological behavior. Fractionation-processes such as partial melting, hydration, and dehydration are all controlled by volatiles in the rocks. A significant portion of the volatiles in the Earth has been thought to be present in the atmosphere and oceans as a consequence of extensive degassing during accretion and subsequent mantle degassing. On the other hand, it has been recently recognized that substantial amounts of volatiles are recycled back into the mantle at subduction zones, where intensive devolatilization of descended materials during arc magma generation was once thought to act as an effective "subduction barrier". However, fundamental questions still remain, such as: how are volatiles species distributed throughout the early and present Earth? What are the mechanisms for, and rate at which, volatiles are fluxed between the atmosphere, crust, and mantle? And what role have volatiles played in driving the evolution of the Earth? The possible role of the core in storing primordial volatiles is also poorly constrained. We therefore welcome contributions from experimental, observational, and modeling studies that help shed light on the deep cycles of volatiles, such as hydrogen, carbon, nitrogen, noble gases, halogens and sulfur. We particularly 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.
英文Volatiles play an important role in the geodynamics and chemical differentiation in the mantle and crust by drastically changing mineral stability and rheological behavior. Fractionation-processes such as partial melting, hydration, and dehydration are all controlled by volatiles in the rocks. A significant portion of the volatiles in the Earth has been thought to be present in the atmosphere and oceans as a consequence of extensive degassing during accretion and subsequent mantle degassing. On the other hand, it has been recently recognized that substantial amounts of volatiles are recycled back into the mantle at subduction zones, where intensive devolatilization of descended materials during arc magma generation was once thought to act as an effective "subduction barrier". However, fundamental questions still remain, such as: how are volatiles species distributed throughout the early and present Earth? What are the mechanisms for, and rate at which, volatiles are fluxed between the atmosphere, crust, and mantle? And what role have volatiles played in driving the evolution of the Earth? The possible role of the core in storing primordial volatiles is also poorly constrained. We therefore welcome contributions from experimental, observational, and modeling studies that help shed light on the deep cycles of volatiles, such as hydrogen, carbon, nitrogen, noble gases, halogens and sulfur. We particularly 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.
発表方法口頭および(または)ポスターセッション
ジョイントセッションAGU
招待講演Ray Burgess (University of Manchester)
是永 淳 (イェール大学地球科学科)
時間講演番号タイトル発表者予稿原稿
口頭発表 5月29日 PM1
13:45 - 14:15SGC40-01Continental growth, crustal recycling, and global water cycle是永 淳予稿
14:15 - 14:30SGC40-02マントルプルーム内部でマグマ形成に果たす揮発成分の役割高橋 栄一予稿
14:30 - 14:45SGC40-03DH partitioning experiment among high-pressure polymorph of olivine佐野 亜沙美予稿
14:45 - 15:00SGC40-04Formation of Fe-rich volatile-bearing phases in the deep lower mantle and the implications for deep Earth volatile cyclesLi Zhang予稿
15:00 - 15:15SGC40-05Estimation of the origin of Pitcairn Island OIB by Independent Component Analysis小澤 恭弘予稿
口頭発表 5月29日 PM2
15:30 - 16:00SGC40-06Tracing recycled volatiles in MORB with halogensRay Burgess予稿
16:00 - 16:15SGC40-07Volatile composition in ocean island basalts羽生 毅予稿
16:15 - 16:30SGC40-08Halogen heterogeneity in the subcontinental lithospheric mantle角野 浩史予稿
16:30 - 16:45SGC40-09Efficiency of Deep Carbon Subduction: Input, Metamorphic Records, and Bearing on Estimated Sources of Arc Volcanic GasesGray E Bebout予稿
16:45 - 17:00SGC40-10Helium isotope variations in subduction-type volcanic hydrothermal systems佐野 有司予稿
講演番号タイトル発表者予稿原稿
ポスター発表 5月29日 AM2
SGC40-P01大陸成長モデルの勘どころ是永 淳予稿
SGC40-P0227億年前のベリングウェーコマチアイトの質量非依存硫黄同位体分別:太古代における地殻物質のリサイクル久保田 勇祐予稿
SGC40-P03Determination of halogens in some standard materials using the neutron irradiation noble gas mass spectrometric technique角野 浩史予稿
SGC40-P04FTIR spectroscopy and noble gas mass spectrometry for a single olivine grain仁木 創太予稿
SGC40-P05蛇紋石へのハロゲン元素の新しい溶解機構:結晶化学的考察神崎 正美予稿
SGC40-P06竹富島温泉掘削試料の鉱物学的・地球化学的特徴新垣 典之予稿
SGC40-P07Variation of helium isotope compositions at Lake Mashu鹿児島 渉悟予稿
SGC40-P08Helium isotopes in Tachibana Bay and Shimabara Bay, NagasakiMa. Teresa Escobar予稿