セッション概要

   

固体地球科学(S) / 固体地球科学複合領域・一般(CG) /  **国際セッション
S-CG14 Mixed volatiles in subduction zones; Physical and chemical properties and processes


プログラム掲載短縮名 Mixed volatiles in subduction zones
口頭発表
発表日時/会場/座長
5月25日 AM2 (12:00 - 12:45) 303 Mysen Bjorn 
5月25日 PM1 (14:15 - 16:00) 303 Mysen Bjorn  趙 大鵬 
5月25日 PM2 (16:15 - 18:00) 303 大谷 栄治 
ポスター発表
発表日時/会場
5月25日 (コアタイム 18:15 - 19:30) コンベンションホール
連絡先 Mysen Bjorn
メールアドレス bmysen@ciw.edu
コンビーナ Mysen Bjorn  Eiji Ohtani  Dapeng Zhao 
スコープ The principal volatiles in subduction zones and CO2 and H2O derived from devolatilization of carbonate and hydrous minerals in subducted oceanic crust and upper mantle. In the forearc region, highly reduced CH4 may be formed via deserpentinization of forarc mantle. Halogens (F and Cl) are can also be transported at least to upper mantle depth. Fluorine may, in fact, enhance the P-T stability of hydrous minerals. Release of volatiles causes changes in elastic properties of the residual devolatilized rocks, which, in turn, governs seismic velocities, density, shear strength, and compressibility. The intergranular pore fluid also affects these properties. Whether or not fluid forms an interconnected network is critical for these properties. Fluid interconnectivity also controls the extent to which the fluid fluxes melting in and above subducting slabs and the trace and isotopic signatures of the source materials of melting. Physical properties of magma affect style of eruption. These properties, in turn, are affected by H2O/CO2 and F/Cl abundance ratios. This session will focus on observations, experiments and theory to aid our understanding of 1.Relationship between fluid composition, pressure and temperature and connectivity of intergranular fluid. 2.Shear strength and elastic properties of volatile-bearing mineral assemblages 3.Pressure(depth)-temperature and redox-controlled stability of volatile-bearing minerals in subduction zones and beyond. 4.Melting phase relations and volatile compositions in subduction zones 5.Seismic activity and its relation to volatiles in minerals and in fluids and in melts. 6.Solubility and solution mechanisms of major, mineral, and trace elements in silicate-saturated mixed fluids. 7.Silicate-saturated fluids and volatile-saturated melts and alteration processes in subduction zones. 8.Volatiles and style of volcanic eruption
発表者への注意事項  


時間 講演番号 タイトル 著者 発表者 予稿原稿
口頭発表   5月25日  AM2(12:00-12:45)  303        このページのtopへ
12:00 - 12:30 ★招待
SCG14-01
Carbon mobility by hydrous carbonate liquids at subduction zones POLI, Stefano POLI, Stefano
12:30 - 12:45 SCG14-02 H/D isotope salt effects in electrolyte-bearing aqueous solutions: In situ experiments at supercritical conditions FOUSTOUKOS, Dionysis
MYSEN, Bjorn
FOUSTOUKOS, Dionysis
口頭発表   5月25日  PM1(14:15-16:00)  303        このページのtopへ
14:15 - 14:45 ★招待
SCG14-03
IMAGING FLUIDS AND FLUID REACTIONS IN SUBDUCTION ZONES REYNARD, Bruno REYNARD, Bruno
14:45 - 15:00 SCG14-04 捕獲岩かんらん岩に記録された間隙流体の形状と組成について 大谷 真理
中村 美千彦
吉田 武義
ほか
大谷 真理
15:00 - 15:15 SCG14-05 Dehydration of chlorite and formation of a new hydrous phase 蔡 閙
井上 徹
藤野 清志
蔡 閙
15:15 - 15:30 SCG14-06 Concentration dependence of water diffusion in silica glass at water pressure of 50 bar 黒田 みなみ
橘 省吾
奥村 聡
ほか
黒田 みなみ
15:30 - 15:45 SCG14-07 沈み込み帯マグマ活動における水・主成分・微量成分元素の挙動 木村 純一 木村 純一
15:45 - 16:00 SCG14-08 Phase diagrams for CaCO_{3} + H_{2}O and their bearing on the genesis of carbonate melts POLI, Stefano POLI, Stefano
口頭発表   5月25日  PM2(16:15-18:00)  303        このページのtopへ
16:15 - 16:30 SCG14-09 C-O-H volatiles, redox variation and hydrogen isotope fractionation in silicate-COH systems in subduction zones MYSEN, Bjorn MYSEN, Bjorn
16:30 - 16:45 SCG14-10 スラブの深部構造・脱水と長白山火山の起源 Chen Chuanxu
趙 大鵬
Tian You
ほか
趙 大鵬
16:45 - 17:00 SCG14-11 Hydrogen isotope fractionation between melts and aqueous fluid: Implications for magmatic processes Dalou Celia
LE LOSQ Charles
Mysen Bjorn
Dalou Celia
17:00 - 17:15 SCG14-12 Experimental study on the origin of the D/H fractionation between silicate melts and aqueous fluids at HT/HP conditions LE LOSQ, Charles
CODY, George D.
DALOU, Celia
ほか
LE LOSQ, Charles
17:15 - 17:30 ポスター講演3分口頭発表枠 (SCG14-P01)


講演番号 タイトル 著者 発表者 予稿原稿
ポスター発表   5月25日 コア(18:15-19:30) コンベンションホール     このページのtopへ
SCG14-P01 GHz-P波バッファトロッド・トランスデュサーの開発とDACへの応用 米田 明 米田 明