Geochemical variation in the subducting Pacific Plate and responses of the volcanic arc lavas
Project/Area Number |
24340136
|
Research Category |
Grant-in-Aid for Scientific Research (B)
|
Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Petrology/Mineralogy/Science of ore deposit
|
Research Institution | Japan Agency for Marine-Earth Science and Technology |
Principal Investigator |
KIMURA Jun-Ichi 独立行政法人海洋研究開発機構, 地球内部物質循環研究分野, 分野長代理 (30241730)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2014: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2012: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
|
Keywords | 化学組成 / 同位体組成 / 沈み込み / 太平洋プレート / 島弧火山岩 / マグマ / 沈み込み帯 / 島弧 / 東北日本 / 西南日本 / 火山岩 / 火成岩 |
Outline of Final Research Achievements |
The Principal Investigator (PI) has measured 42 elements and Sr-Nd-Hf-Pb isotope compositions of the Pacific Plate materials subducting beneath the Japanese Islands. Using the data, PI has calculated compositions the fluids released from the Pacific Plate beneath Japan island arcs using a geochemical/petrological mass balance model. The released fluids were added to the mantle beneath the arcs and generated magmas; the same model also calculated these magma compositions. The observed compositions of magmas erupted on the NE and SW Japan arcs were compared with the calculated magma compositions. The geophysical parameters that control the magma compositions were also examined. The model successfully reproduced the observed magma compositions with reasonable geophysical parameters from geophysical observations. These studies finally revealed that the Plate temperature principally controls magma composition and magma production rate.
|
Report
(4 results)
Research Products
(23 results)
-
-
-
-
-
[Journal Article] Diverse magmatic effects of subducting a hot slab in SW Japan: Results from forward modeling2014
Author(s)
Kimura, J. Gill, T. Kunikiyo, I. Osaka, Y. Shimoshioiri, M. Kakasuke, S. Kakubuchi, T. Nagao, K. Furuyama, A. Kamei, H. Kawabata, J. Nakajima, P.E. van Keken, and R.J. Stern
-
Journal Title
Geochem. Geophys. Geosyst.
Volume: 15
Issue: 3
Pages: 691-739
DOI
Related Report
Peer Reviewed
-
-
[Journal Article] High Mg adakite and low Ca boninite from the Bonin forearc seamount: Implication for the reaction between the slab melt and depleted mantle2013
Author(s)
Li, Y.-B., Kimura, J.-I., Machida, S., Ishii, T., Ishiwatari, A., Maruyama, S., Qiu, H.-N., Ishikawa, T., Kato, Y., Haraguchi, S., Takahata, N., Miyazaki, T., Hirahara, Y.
-
Journal Title
Journal of Petrology
Volume: 54
Issue: 6
Pages: 1149-1175
DOI
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
[Journal Article] Across- and along-arc geochemical variations of lava chemistry in Sangihe arc : Various fluid and melt slab fluxes in response to slab temperature.2012
Author(s)
Hanyu T., Gill J.B., Tatsumi Y, Kimura J.-I., Sato K., Chang Q., Senda R., Miyazaki T., Hirahara Y., Takahashi T, Zulkarnain I.
-
Journal Title
Geochemistry Geophysics Geosystems
Volume: 13
Issue: 10
DOI
Related Report
Peer Reviewed
-
-
-
-
-
-
[Presentation] Various arc magmas from a common plate slab: Sources and genetic conditions of the coexisting alkali basalts, sub-alkali basalts, high-Mg andesites, and adakites in the SW Japan hot subduction system
Author(s)
Kimura J.-I., Gill, J.B., Kunikiyo T., Osaka I., Shimoshioiri Y., Katakuse M., Kakubuchi S., Nagao T., Furuyama K., Kamei A., Nakajima J., van Keken, P.E., and Stern R.J.
Organizer
JpGU 日本地球惑星科学連合2013年大会
Place of Presentation
千葉県,幕張メッセ
Related Report