자원환경지질 (Economic and Environmental Geology)
- 제19권3호
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- Pages.179-192
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- 1986
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
부평지역(富平地域)의 중생대(中生代) 화성암류(火成岩類)
Mesozoic Igneous Rocks in the Bupyeong District
초록
In the Bupyeong district, Mesozoic pyroclastic rocks, intrusive breccia, granites and felsic porphyries comprise a volcano-plutonic complex, overlying and intruding the Precambrian Gyeonggi gneiss complex. pyroclastic rocks, consisted mainly of rhyolitic welded tuffs, form a topographic circular structure about 10 kilometers in diameter. Granites and felsic porphyries which intruded the pyroclastic rocks are distributed in the inner side and also along the outer margin of the circular structure. K-Ar ages of two granite bodies(biotite), 162 and
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