太平洋型造山帯の初期沈み込み帯形成場の環境と^<40>Ar/^<39>Arスポット年代学

太平洋型造山带初始俯冲带形成地点环境及^<40>Ar/^<39>Ar点年代学

• 批准号: 01J04062
• 负责人: 辻森 樹
• 金额: $ 2.3万
• 依托单位: Okayama University of Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01J04062/
• 关键词: 40Ar; 39Ar年代測定; 古生代変成岩; 環太平洋型造山帯; 環太平洋造山帯; 蓮華変成帯

本研究は,^<40>Ar/^<39>Arスポット年代測定の地質学・岩石学へ適用法を確立し,その手法を応用した地球進化過程の一般則の検証を目的とする.約6億年の歴史をもつ環太平洋造山帯において,古生代高圧変成岩の変成変形履歴の解析による初期沈み込み帯形成場の環境の解読が,同造山帯成長過程を理解する上で基本的かつ重要な課題である.しかし,変成・変形履歴に具体的な時間目盛りを与えなければ,スラブの沈み込み速度や上昇速度が把握できず,それを打開する鍵として,変成鉱物の極微小部分年代測定に大きな期待が寄せられている.最終年度(平成15年度)は,前年度までの研究成果のいくつかを国際雑誌に発表し(Tsujimori and Liou,2004; Ishiwatari and Tsujimpori,2003),国際学会で成果発表した.また.これまでの研究成果を踏まえて,^<40>Ar/^<39>Arスポット年代測定を東チベットの新生代の造山帯に応用し、成功した(Wallis et al.,2003).また,環太平洋造山帯も含めた世界の高山帯中の高圧変成岩のレビューを行い,ヒマラヤ造山を例にその造山運動をモデル化した(Liou et al.,2004).現在,米国スタンフォード大学にてSHRIMP型2次イオン質量分析装置を用いて行った実験結果をまとめている.

In this study, ^ & lt;40>Ar/ ^ & lt;39>Ar chronological dating of geochemistry and petrology has been established, and the techniques of geochemistry have been used to determine the evolution of the earth. About 6 years of history has changed the Pacific orogenic cycle, and the Paleozoic high-rise diagenetic rock-forming environment has solved the environmental problem of the formation of the upper reaches in the early Paleozoic era. In the shape of the machine, the specific time limit and the speed of the train, the speed of the train, the speed of the machine, the speed of the car, the speed of the machine, the car, the car, the car The last year (Pingcheng 15), the previous year, the results of the research were published in the International Journal of International Journal (Tsujimori and Liou,2004; Ishiwatari and Tsujimpori,2003), and the results of the International Society of International Studies were published. There's nothing wrong with it. The results of the research have been greatly improved, ^ & lt;40>Ar/ ^ & lt;39>Ar have been dated and dated, and the Cenozoic orogeny has been successfully constructed (Wallis et al.,2003). The Pacific orogenic belt contains high-rise diagenetic rocks in the high mountains of the world. This is an example of rapid orogeny. This is an example of orogeny. Geochemistry of orogeny activities and geochemistry (Liou et al.,2004). At present, in the United States, the shrimp model 2-time quantitative analysis device has been used in the United States, and the results show that the results are not satisfactory.

项目成果

Liou, J.G., Tsujimori, T., Zhang, R.Y., Katayama, I., Maruyama, S.: "Granulite facies relics in the early Paleozoic kyanite-bearing ultrabasic metacumulate in the Oeyama belt, the Inner Zone of southwestern Japan"International Geology Review. 46. 1-27 (20

Liou, J.G.、Tsujimori, T.、Zhang, R.Y.、Katayama, I.、Maruyama, S.：“日本西南部内区大江山带早古生代含蓝晶石超基性堆积岩中的麻粒岩相遗迹”国际地质

Tatsuki Tsujimori, Akira Ishiwatari: "Granulite facles relics in the early Paleozoic kyanite-bearing ultrabasic metacumulate in the Oeyama belt, the Inner Zone of southwestern Japan"Gondwana Research. 5. 823-835 (2002)

Tatsuki Tsujimori、Akira Ishiwatari：“日本西南部内区大江山带早古生代含蓝晶石的超基性堆积岩中的麻粒岩面遗迹”冈瓦纳研究。

辻森 樹, 板谷徹丸, 岡田利典: "国山地,大佐山麓ローソン石青色片岩中のステイルプノメレンK-Ar年代測定:予報"岡山理科大学自然科学研究所研究報告. 28(印刷中). (2002)

辻森树、板谷哲丸、冈田俊典：“国屋町大佐山脚下的硬铝石蓝片岩中的 Steilpnomelene K-Ar 测年：预测”冈山理科大学自然科学研究所的研究报告（出版中）。 2002）

Tatsuki, T., Liou, J.G., Juhn G.Liou: "Coexisting chromian omphacite and diopside in tremolite schist from the Chugoku Mountains, SW Japan : The effect of Cr on the omphacite-diopside immiscibility gap"American Mineralogist. 89. 7-17 (2004)

Tatsuki, T.、Liou, J.G.、Juhn G.Liou：“日本西南部中国山脉透闪石片岩中共存的铬系绿辉石和透辉石：铬对绿辉石-透辉石不混溶间隙的影响”美国矿物学家。

Ishiwatari, A., Tsujimori, T.: "Paleozoic ophiolites and blueschists in Japan and Russian Primorye in the tectonic framework of East Asia : a synthesis"The Island Arc. 12. 190-206 (2003)

Ishiwatari, A.，Tsujimori, T.：“东亚构造框架中日本和俄罗斯滨海边疆区的古生代蛇绿岩和蓝片岩：综合”岛弧。