자원환경지질 (Economic and Environmental Geology)
- 제19권spc호
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- Pages.103-112
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- 1986
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
거제(巨濟) 동아광산(東亞鑛山)의 지질(地質) 및 광상(鑛床)
Geology and Ore Deposits of Geoje Dong-A Mine
초록
The geology of the mine consists of Cretaceous lower andesitic breccia member, tuffaceous black shale, upper tuffaceous sandstone member and andesitic dike. Ore bodies are two parallel veins of breccia originated from hydrothermal activity of later acidic igneous intrusion. First two periods of mineralization, gold and silver, and copper, and later copper enrichment was identified. The first two might have been occurred during boiling of hydrothermal solution that formed breccia and copper enrichment was accomplished by enhancement of
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