Research on ancient seismogenic faults around plate boundaries from view points of fluid inclusion and miero-seale mineralization

从流体包裹体和微盖层成矿作用角度研究板块边界古发震断裂

• 批准号: 13304038
• 负责人: OGAWA Uujiro
• 金额: $ 32.36万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 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-13304038/
• 关键词: plate tectonics; seismogenic fault; hydrothermal vein; Quid inclusion; methane hydrate; mineral deformation; Raman spectroscopy; ICP-MS; plate tectouics; hydrotherwal veiw; minera determination; ICP-MSI; 顕微ラマン測定; メタンハイドレート; 流体包有物; 断層; プレート

This year is the final year of the research project and many results were come out and some of them were published in the international journals. The most basic equipment for this project, the Raman spectroscopy, could do both on DAC and thin sections, and this is the first aim for geoscience. It could detect the high pressure phase of gas hydrate, and many natural minerals in micrometer scale under transparent microscope. In geoscientific results, we found many new observations, among which the pseudotachylyte from the ancient plate boundary fault was the most profound result. Another interesting result is that we found bimodal fluid flows in the Ordovician accretionary prism boundary fault in Scotland. Some of the pelagic to terrigenous sediments were analyzed from micrometer scale before and after entering to the accretionary prisms. All of these results were displayed in the international meetings or published in journals. In addition we did an extensive study on the plate boundary faults and related deformation and fluid flow in the Mienoka ophiolite. We elucidated several stages from the deformed basaltic rocks. As above, our final goal was accomplished

今年是该项目的最后一年，取得了许多成果，其中一些成果发表在国际期刊上。这个项目最基本的设备，拉曼光谱学，可以同时用于DAC和薄片，这是地球科学的第一个目标。它可以在透明显微镜下检测天然气水合物的高压相和许多微米尺度的天然矿物。在地球科学成果中，我们发现了许多新的观测结果，其中来自古板块边界断裂的伪岩是最深刻的结果。另一个有趣的结果是，我们在苏格兰奥陶纪增生棱柱边界断层中发现了双峰流体流动。对部分上海至陆源沉积物在进入增生棱镜前后进行了微米尺度的分析。所有这些成果都在国际会议上展示或在期刊上发表。此外，我们还对Mienoka蛇绿岩的板块边界断裂及其相关的变形和流体流动进行了广泛的研究。我们从变形的玄武岩中阐明了几个阶段。如上所述，我们的最终目标实现了

项目成果

Kato, A., Sakaguchi, A., Yoshida, S., Mochizuki, H., Kaneda, Y.: "Permeability measurements and precipitation sealing of basalt in the ancient exhumed fault in subduction zone"Bulletin of Earthquake Research Institute, (University of Tokyo). 78. 83-89 (20

Kato, A.、Sakaguchi, A.、Yoshida, S.、Mochizuki, H.、Kaneda, Y.：“俯冲带古挖出断层中玄武岩的渗透率测量和降水封闭”地震研究所通报，（大学）

Takahasi, A., Ogawa, Y., Ohta, Y., Hirano, N.: "The nature of faulting and deformation in the Mineoka Ophiolite, NW Pacific Rim"Geological Society of London (Dilek, Y., Robinson, P.(eds)). Special Publication, 128, Ophiolite in Earth History. (2004)

高桥，A.，小川，Y.，太田，Y.，平野，N.：“西北环太平洋峰冈蛇绿岩的断层和变形的性质”伦敦地质学会（Dilek，Y.，罗宾逊，P.

Ogawa, Y., Takahashi, A.: "Tectonic implications of Minooka Ophiolite emplacement central Japan"Tectonophyrics. (in press). (2004)

小川，Y.，高桥，A.：“日本中部箕冈蛇绿岩就位的构造意义”构造岩。

Kawamura, K., Ogawa, Y.: "Progressive microfabic changes in unconsolidated sed"Proc. ODP, Sci. Res.. 185. web (2002)

Kawamura, K.，Okawa, Y.：“未合并的 sed 中的渐进式 microfabic 变化”Proc。

Kyono, A., Kimata, M., Hatta, T.: "Aluminum position in Rb-feldspar as determined by X-ray photoelectron Spectroscopy"Naturwissenschaften. 90. 414-418 (2003)

Kyono, A.、Kimata, M.、Hatta, T.：“通过 X 射线光电子能谱测定铷长石中的铝位置”Naturwissenschaften。