Comparative studies on metamorphic history and tectonic subdivision in Southwest Japan and New Zealand

日本西南部和新西兰的变质历史和构造细分的比较研究

• 批准号: 12640444
• 负责人: NISHIMURA Yujiro
• 金额: $ 2.24万
• 依托单位: Yamaguchi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12640444/
• 关键词: accretionary complexes in Southwest Japan; accretionary complexes in New Zealand; metamorphic history; geotectonic subdivision; K-Ar ages; carbonaceous material d_<002> values; white mica b_0 values; microfossil ages; 炭質物doo2値; 白雲母b0値

This project has expired the term of our research for three years, and gotten much results according to plan. Abstracts of our research are as follows :For the purpose of comparative studies on metamorphic history and geotectonic subdivision, we have been engaged in field surveys and laboratory work on several accretionary complexes in Southwest Japan and New Zealand. Many results were reported at Geological Society of Japan and published in several journals.1. One of the most important results is a paper printed in American Mineralogist (2000), which Y. Nishimura had geologically surveyed the Otago Schists and adjacent weakly metamorphosed accretionary complex in South Island of New Zealand in cooperation with of D.S. Coombs, C. Landis and T. Itaya. This paper has clarified not only to be the same in the thermal structure and polarity of metamorphic ages for the Otago Schists and adjacent weakly metamorphosed accretionary complex, but also to be resemble to the Suo metamorphic rocks a … More nd adjacent weakly metamorphosed accretionary complex, and emphasized a character of subduction (Miyashiro) type orogeny. Y. Nishimura and T. Itaya have measured a lot of d _<002> data of carbonaceous material and K-Ar ages of recrystallized phengitic mica from the Waipapa rocks in North Island of New Zealand, and written a manuscript. This work is under discussion with Professor P.M. Black. Results from the Middle Ryukyu Arc will be examined more fully, and published in near future.2. T. Itaya has measured a lot of K-Ar ages, and published important results on metamorphic rocks of the Renge and Sanbagawa belts as well as of overseas in Journal of the Geological Society of Japan (2000) and Gondowana Research (2002).3. Y. Isozaki has established a new geological development of Japanese Islands based on the plate orogeny, and easily explained in Kagaku (2000). He has also positively examined in the Archean rocks of West Australia and a P-T boundary of South China, and published some papers in Chemical Geology (2002) and so on.5. Y. Nishimura and Y. Isozaki have published a textbook entitled Basic Geosciences (2002) from Asakura Shoten together with four coauthors. Less

这个项目已经结束了我们三年的研究期限，并按计划取得了很多成果。主要研究内容如下：为了比较变质史和大地构造细分，我们对日本西南部和新西兰的几个增生杂岩进行了野外调查和实验室工作。许多研究结果在日本地质学会发表，并在若干期刊上发表。其中最重要的成果之一是发表在《美国矿物学家》（2000）上的一篇论文，其中Y. Nishimura与D.S. Coombs、C. Landis和T. Itaya合作，对新西兰南岛的奥塔哥片岩和邻近的弱变质增生杂岩进行了地质调查。阐明了奥塔哥片岩及其邻近的弱变质增生杂岩在热构造和变质时代极性上不仅具有相似性，而且与索变质岩及其邻近的弱变质增生杂岩具有相似性，并强调了其俯冲（宫城）式造山作用的特征。Y. Nishimura和T. Itaya在新西兰北岛Waipapa岩石中测量了大量碳质物质的d <002>数据和重结晶腐生云母的K-Ar年龄，并撰写了手稿。这项工作正在和P.M.教授讨论中黑色的。中琉球弧的研究结果将在不久的将来进行更全面的研究，并发表。T. Itaya测量了大量的K-Ar年龄，并在《Journal of Geological Society of Japan》（2000）和《Gondowana Research》（2002）上发表了关于Renge和Sanbagawa带以及海外变质岩的重要成果。Y. Isozaki在板块造山运动的基础上建立了日本列岛的新地质发展，并在Kagaku（2000）中得到了很好的解释。他还对西澳大利亚太古宙岩石和华南的一个P-T边界进行了积极的研究，并在《化学地质》（2002）等刊物上发表了一些论文。西村Y.和矶崎Y.与四名合著者一起出版了浅仓Shoten的《基础地球科学》（2002年）教科书。少

项目成果

Tatsumi, Y.: "Activation of Pacific mantle plumes during the Carboniferous : Evidence from accretionary complexes in southwest Japan"Geology. Vol.28. 580-582 (2000)

Tatsumi, Y.：“石炭纪期间太平洋地幔柱的活化：日本西南部增生杂岩的证据”地质学。

Nam, T.N.: "^<40>Ar/^<39>Ar single grain dating and mineral chemistry of hornblendes south of the Red River Shear Zone (Vietnam) : New evidence for Early Proterozoic tectonothermal event"Gondwana Research. Vol.5. 801-811 (2002)

Nam, T.N.：“红河剪切带（越南）以南角闪石的^<40>Ar/^<39>Ar单晶测年和矿物化学：早元古代构造热事件的新证据”冈瓦纳研究。

Takeshita, T.: "K-Ar ages of the 'Ishizuchiyama Tertiary System' in western Shikoku, Japan, and their implications"Journal of the Geological Society of Japan. Vol.106. 308-311 (2000)

Takeshita, T.：“日本四国西部‘石锤山第三系’的 K-Ar 年龄及其影响”，日本地质学会杂志。

Kato, Y. ほか2名: "Geochemistry of Late Permiam to Early Triassic pelagic cherts from southwest Japan : implication for an oceanic redox change"Chem.Geol.. 182. 15-34 (2002)

Kato, Y. 和另外 2 人：“日本西南部二叠纪晚期到三叠世早期远洋燧石的地球化学：对海洋氧化还原变化的影响”Chem.Geol.. 182. 15-34 (2002)

西村 祐二郎: "周防変成岩石とOtago Schist"山口地学会誌. No.49. 1-20 (2002)

西村裕二郎：《Suo变质岩和奥塔哥片岩》山口地质学会杂志第49期（2002年）。