Studies of geological structures and explorations of epithermal ore and geothermal deposits by remote sensing technique
| Project/Area Number |
60850117
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
資源開発工学
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| Research Institution | Kyushu University |
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Principal Investigator |
MUKAIYAMA Hiromu Faculty of Engineering, Kyushu University, 工学部, 教授 (70037662)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Koichiro Faculty of Engineering, Kyushu University, 工学部, 助手 (10182916)
KIMURA Tsuyoshi Faculty of Engineering, Kyushu University, 工学部, 助手 (30161566)
INOUE Masahiro Faculty of Engineering, Kyushu University, 工学部, 助教授 (40151625)
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| Project Period (FY) |
1985 – 1986
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| Project Status |
Completed (Fiscal Year 1986)
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| Budget Amount *help |
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 1986: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1985: ¥5,300,000 (Direct Cost: ¥5,300,000)
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| Keywords | Remote sensing / Epithermal ore deposits / Geothermal deposits / Geological structures / Landsat images / Fractures / Lineaments / 斜面強調図 / リモセン / 地質構造解析 / 鉱床探査 / ランドサット |
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| Research Abstract |
This study manifests that a remote sensing technique through topographic analysis and comparison between various data of geology and geophysics can provide an effective guide for exploration of epithermal ore and geothermal deposits.
The lineaments detected from the Landsat images enable to analyze the fractures rapidly, through which magmas rise in the crust and subsequently cause volcanism and mineralization. In this study, firstly, the slope shaded maps are made to obtain such lineaments easily, where slopes facing certain directions are shaded to emphasize their elevation. A technique of putting the slope shaded maps upon their negative figures and then slightly shifting them gives small scale lineaments mechanically which are similar to those detected from the Landsat images directly. Since this technique has no influence of scanning lines appeared in the Landsat images, it is useful for detecting the E-W lineaments.
The detected lineaments, Secondly, are compared with geological and geophysical data to investigate the geological structures in Japan. The distribution of the lineaments in Chubu and Kinki districts shows a good agreement with that of active faults and microearthquake epicenters. The lineaments in Kyushu and Hokkaido districts are compared with hot springs and epithermal ore deposits mainly. As a result, It is revealed that the distribution of the hot springs and epithermal ore deposits depends on the NNE-SSW and NW-SE lineaments in Kyushu district. This dependence is found in Hokkaido District also.
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Report
(2 results)
Research Products
(8 results)
