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Research on the formation mechanism of the hydrothermal ore deposits and its application to the exploration

热液矿床形成机制研究及其在勘查中的应用

基本信息

批准号：
17360431
负责人：
TAMAKI Kensaku
金额：
$ 8.42万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360431/
关键词：
Marine mineral resource Marine exploration Geology Ocean engineering Hydrothermal deposits

项目摘要

The objectives of the current research are to understand the formation mechanism of submarine hydrothermal ore deposits and to apply the understanding to the exploitation of the submarine hydrothermal ore deposits. We conducted five research cruises by the current research program ; one cruise at the mid-oceanic ridge in the Indian Ocean (the Central Indian Ridge) and four cruises at the Myojin Shoal area of Izu-Ogasawara Arc. An AUV (Autonomous Underwater Vehicle), which was developed by Prof. T. Ura, one of the members of the current research program, by using the budgets of other research program, was used during three cruises among the five cruises. We could discover two active hydrothermal sites at the Central Indian Ridge and one acitvie hydrothermal site at the Myojin Shoal area. The AUV installs in-situ Mn anomaly analyzer, side-scan sonar, phase-bathymetric mapping system, and three-component magnetometer. The current research proved that the AUV is one of the most effective tool to explore the active hydrothermal site. At the Myojin Shoal area, by collecting swath bathymetric mapping data during three cruises, a detailed bathymetric map was successfully completed. The analyses of the bathymetric data revealed the relationship of volcanoes, faulting and arc rifting. The insights of these detailed structures will provide crucial information on the target zones of near-future research of hydrothermal sites in the area

本研究的目的是了解海底热液矿床的形成机制，并将其应用于海底热液矿床的开发。本研究计划共进行了5次研究巡航，其中1次在印度洋中洋脊（中印度洋脊），4次在伊豆-小笠原岛弧的明神暗沙区域。介绍了T. Ura是当前研究计划的成员之一，通过使用其他研究计划的预算，在五次航行中的三次航行中使用。我们可能会在中印度岭发现两个活跃的热液点，在妙津浅滩地区发现一个活跃的热液点。AUV安装了现场锰异常分析仪、侧扫声纳、相位测深系统和三分量磁力仪。目前的研究证明，AUV是寻找活动热液场所最有效的工具之一。在妙珍暗沙地区，通过三次航行收集条带测深数据，成功绘制了详细的测深图。对测深数据的分析揭示了火山、断层和弧裂的关系。对这些详细结构的了解将为该地区近期热液遗址研究的目标区域提供关键信息