자원환경지질 (Economic and Environmental Geology)
- 제27권2호
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- Pages.209-212
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- 1994
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
제주도의 제4기 지구조운동
Quaternary Tectonic Movement on Cheju Island
- Hwang, Jae Ha (Korea Institute of Geology, Mining and Materials) ;
- Lee, Byung Joo (Korea Institute of Geology, Mining and Materials) ;
- Song, Kyo Young (Korea Institute of Geology, Mining and Materials)
- 투고 : 1994.01.14
- 발행 : 1994.04.25
초록
Cheju Island was formed by volcanic activity probably related to the inferred geodynamics in the early Quaternary times. Paleostress analysis, in spite of a few fault slip data collected near Sanbangsan trachyte dome (dated 0.87 Ma) represents an extentional tectonic event with the direction ENE-WSW. Joint anayses in the vicinity of Seahwa reveal three extensional tectonic events of directions NW-SE, NE-SW and ENE-WSW. Especially the extensional event with the direction ENE-WSW affected the whole Cheju area during the most recent time.
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