Chemical evolution of aqueous fluids from subducting slabs to the mantle wedge
| Project/Area Number |
16H04075
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Petrology/Mineralogy/Economic geology
|
|---|
| Research Institution | Shizuoka University (2018-2019)
Kyoto University (2016-2017) |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
重野 未来 北九州市立自然史・歴史博物館, 自然史課, 受託研究生 (90749558)
森 康 北九州市立自然史・歴史博物館, 自然史課, 学芸員 (20359475)
|
|---|
| Project Period (FY) |
2016-04-01 – 2019-03-31
|
| Project Status |
Completed (Fiscal Year 2019)
|
| Budget Amount *help |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2016: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
|
|---|
| Keywords | 沈み込み帯 / 流体包有物 / 硫酸塩 / 海水 / 塩水 / 炭酸塩 / マントル / 炭酸塩鉱物 / オフィオライト / 炭酸塩岩化作用 / 塩濃度 / スラブ流体 / 高圧変成岩 / ヒスイ輝石岩 / 沈み込みチャネル / 海水の循環 / 蛇紋岩 / メランジュ / 二酸化炭素 / メタン / 変成作用 / マグマ / 硫黄 / 酸素雰囲気 / スラブ / カルクアルカリ / マントルウェッジ |
|---|
| Outline of Final Research Achievements |
We aim to understand the spatial variation in the chemical composition of aqueous fluids in the depth of subduction zones by knowing the chemical composition of fluid inclusions in the rocks of the subducting slabs and the mantle wedges. The discovery of sulfate ions in saline fluid inclusions in mantle peridotite xenoliths was the most significant findings. In addition to these works, we have challenged the use of a focused ion beam (FIB) was used to frozen fluid inclusions. We also determined the salinity of fluid inclusions in jadeite-bearing rocks in high-pressure metamorphic rocks to understand the characteristics of the chemical composition and its spatial variation of aqueous fluids in the subduction zones.
|
| Academic Significance and Societal Importance of the Research Achievements |
日本海溝や南海トラフから沈み込む海洋プレートから日本列島の下のマントルへ、水に富む流体が絶えず供給される。研究代表者たちは、流体の化学組成を岩石の中にトラップされた微小なカプセル(流体包有物)の化学組成を研究した。その結果、火山によってマントルから運ばれてきた岩石中の塩水流体包有物に炭酸塩イオンと硫酸塩イオンを発見した。これにより、沈み込み帯深部で海洋プレートから日本列島の下に供給されている塩水は海水由来であり、有馬や宝塚の温泉として涌き出すとともに、マントルを酸化する原因であると提案する。この提案により、日本列島に存在する非火山性温泉や火山岩の化学的特徴をよりよく理解することができる。
|
Report
(4 results)
Research Products
(40 results)
-
-
-
-
-
-
-
[Journal Article] Melting behavior of SiO2 up to 120 GPa2020
Author(s)
Andrault, D., Morard, G., Garbarino, G., Mezouar, M., Bouhifd, M. A., Kawamoto, T.
-
Journal Title
Physics and Chemistry of Minerals
Volume: 47
Issue: 2
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
-
-
-
-
[Journal Article] Slab-derived halogens and noble gases illuminate closed system processes controlling volatile element transport into the mantle wedge2017
Author(s)
Kobayashi, M., Sumino, H., Nagao, K., Burgess, R., Ishimaru, S., Arai, S., Yoshikawa, M., Kawamoto, T., Kumagai, Y., Kobayashi, T., Burgess, R., Ballentine, C.
-
Journal Title
Earth and Planetary Science Letters
Volume: 457
Pages: 106-116
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
[Journal Article] Experimental Mineralogy and Petrology2017
Author(s)
Geiger, C. A., Kawamoto, T.
-
Journal Title
in: White, W.M. (Ed.), Encyclopedia of Geochemistry: A Comprehensive Reference Source on the Chemistry of the Earth, Springer International Publishing
Volume: 1
Pages: 1-6
DOI
ISBN
9783319121277
Related Report
Peer Reviewed / Int'l Joint Research
-
-
[Journal Article] Aqueous fluids and sedimentary melts as agents for mantle wedge metasomatism, as inferred from peridotite xenoliths at Pinatubo and Iraya volcanoes, Luzon arc, Philippines2016
Author(s)
Yoshikawa, M. Tamura, A., Arai, S., Kawamoto, T., Payot, B. D., Rivera, D. J., Bariso, E. B., Mirabueno, Ma. H. T., Okuno, M., Kobayashi, T.
-
Journal Title
Lithos
Volume: 262
Pages: 355-368
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
-
[Presentation] Low-salinity aqueous fluid inclusions in dolomite veins of a listvenite of Oman Drilling Project Phase 12020
Author(s)
Tatsuhiko Kawamoto, Hiroki Sato, Toma Takahashi, Juan Miguel Guotana, Tomoaki Morishita, Peter B. Kelemen, Jude Ann Coggon, Michelle Harris, Juerg Michael Matter, Katsuyoshi Michibayashi, Eiichi Takazawa, Damon A. H. Teagle, The Oman Drilling Project Phase 1 Science Party
Organizer
International Conference on Ophiolites and the Oceanic Lithosphere: Results of the Oman Drilling Project and Related Research
Related Report
Int'l Joint Research
-
-
-
-
-
-
-
-
-
-
[Presentation] Volatile element transport within a closed system constrained by halogens and noble gases in mantle wedge peridotites2017
Author(s)
Masahiro Kobayashi, Hirochika Sumino, Keisuke Nagao, Satoko Ishimaru, Shoji Arai, Masako Yoshikawa, Tatsuhiko Kawamoto, Yoshitaka Kumagai, Tetsuo Kobayashi, Ray Burgess, Chris Ballentine
Organizer
日本地球惑星科学連合大会
Related Report
-
-
-
-
-
-
-
-
-
[Presentation] Trace Element Signature for Fluid-Inclusion Bearing Olivines in the Pinatubo Harzburgite Xenolith2016
Author(s)
Yoshikawa, M., Shibata, T., Kawamoto, T., Arai, S., John Rivera D., Bariso, E. B., Okuno, M. & Kobayashi, T.
Organizer
Goldschmidt conference
Place of Presentation
Pacifico Yokohama (神奈川県、横浜市)
Year and Date
2016-06-26
Related Report
-
-
-
-
-
