Economic and Environmental Geology (자원환경지질)
- Volume 28 Issue 5
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- Pages.513-518
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- 1995
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
A Petrological and Geochemical Study of Granites in the Cheju Island
제주도에서 산출되는 화강암에 관한 연구
- Ahn, Kun Sang (Dept. of Earth Science, Chosun University) ;
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Lee, Hyun Koo
(Dept. of Geology, Chungnam National University) ;
- Lim, Hyun Cheol (Korea Institute of Geology, Mining and Materials)
- Received : 1995.08.19
- Published : 1995.10.30
Abstract
A granite drilling core (-1200 m) obtained near the Majang cave in east part of the Cheju island. The rock is pinksh in color and has miarolitic cavities. It is coarse-grained rock and consists of quartz, plagioclase, alkali feldspar, biotite and magnetite. The rock shows characteristically micrographic texture. The alkali feldspar is subhedral to anhedral and generally interstitial grains and fonns micrographic texture. K/Ar age of alkali feldspar in the core specimen is
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