Precise and reliable argon geochronology of high- and ultra high-pressure metamorphic rocks
Project/Area Number |
20244087
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Petrology/Mineralogy/Science of ore deposit
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Research Institution | Okayama University of Science |
Principal Investigator |
ITAYA Tetsumaru Okayama University of Science, 自然科学研究所, 教授 (60148682)
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Co-Investigator(Kenkyū-buntansha) |
HYODO Hironobu 岡山理科大学, 自然科学研究所, 教授 (50218749)
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Project Period (FY) |
2008 – 2010
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Project Status |
Completed (Fiscal Year 2010)
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Budget Amount *help |
¥50,440,000 (Direct Cost: ¥38,800,000、Indirect Cost: ¥11,640,000)
Fiscal Year 2010: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2009: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2008: ¥39,650,000 (Direct Cost: ¥30,500,000、Indirect Cost: ¥9,150,000)
|
Keywords | 高圧・超高圧変成岩 / 海洋性物質起源 / 変成作用 / 変形作用 / 沈み込み帯 / 上昇過程 / 白雲母アルゴン年代学 / アルゴン離散 / 超高圧変成岩 / 高圧変成岩 / 変成岩上昇履歴 / アルゴン年代学 / 変成上昇履歴 |
Research Abstract |
Basic research was carried out to reveal the metamorphism and the subsequent exhumation process of high and ultra-high pressure metamorphic rocks. In a part of the achievement, we set up the micro-probe Ar-Ar facilities equipped with UV laser. With analyses using the new facilities and the conventional ones, we examined the relationships among geological structure, thermal structure and phengite ages of the high-pressure metamorphic belts in Pacific type orogenic belt. This approach revealed two different exhumation processes of the belts. We interpreted the differences are due to the natures of oceanic plate boundaries that subduct into the deeper part of subduction zone.
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Report
(4 results)
Research Products
(63 results)
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[Journal Article] Mineral chemistry and K-Ar ages of plutons across the Karakoram fault in the Shyok-Nubra confluence of northern Ladakh Himalaya, India2010
Author(s)
Thanh, N.X., Itaya, T., Ahmad, T., Kojima, S., Ohtani, T., Ehiro, M
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Journal Title
Gondwana Research 17
Pages: 180-188
Related Report
Peer Reviewed
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[Journal Article] High P-T granulite relicts from the Imjingang belt, South Korea : tectonic significance2010
Author(s)
Sajeev, K., Jeong, JH., Kwon, S., Kee, WS., Kim, SW., Komiya, T., Itaya, T., Jung, HS, Park, Y.
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Journal Title
Gondwana Research 17
Pages: 75-86
Related Report
Peer Reviewed
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[Journal Article] K-Ar ages of biotite and muscovite from Pangong metamorphic complex, Shyoksuture zone, India : Implications for the youngest post-collision metamorphic event in Ladakh Himalaya2009
Author(s)
Thanh, N.G., Itaya, T., Sajeev, K., Ahmad, T., Kojima, S., Ohtani, T., Ehiro, M.
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Journal Title
J.Mineral.Petrol.Sci. 104
Pages: 188-191
NAID
Related Report
Peer Reviewed
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[Journal Article] Regional-Scale Excess Ar wave in a Barrovian type metamorphic belt, eastern Tibetan Plateau2009
Author(s)
Itaya, T., Hyodo, H., Tsujimori, T., Wallis, S., Aoya, M., Kawakami, T., Gouzu, C.
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Journal Title
Island Arc 18
Pages: 293-305
NAID
Related Report
Peer Reviewed
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[Journal Article] K-Ar ages of biotite and muscovite from Pangong metamorphic complex, Shyok suture zone, India : Implications for the youngest post-collision metamorphic event in Ladakh Himalaya2009
Author(s)
Thanh, N. G., Itaya, T., Sajeev, K., Ahmad, T., Kojima, S., Ohtani, T., Ehiro, M.
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Journal Title
J. Min. Pet. Sci. 104(印刷中)
NAID
Related Report
Peer Reviewed
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