- Volume 49 Issue 2
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Reactivated Timings of Yangsan Fault in the Sangcheon-ri Area, Korea
상천리 일대 양산단층의 재활동 연대
- Song, Yungoo (Department of Earth System Sciences, Yonsei University) ;
- Park, Changyun (Department of Earth System Sciences, Yonsei University) ;
- Sim, Ho (Department of Earth System Sciences, Yonsei University) ;
- Choi, Woohyun (Department of Earth System Sciences, Yonsei University) ;
- Son, Moon (Department of Geological Sciences, Pusan National University) ;
- Khulganakhuu, Chuluunbaatar (Department of Earth System Sciences, Yonsei University)
- 송윤구 (연세대학교 지구시스템과학과) ;
- 박창윤 (연세대학교 지구시스템과학과) ;
- 심호 (연세대학교 지구시스템과학과) ;
- 최우현 (연세대학교 지구시스템과학과) ;
- 손문 (부산대학교 지질환경과학과) ;
- Received : 2016.04.12
- Accepted : 2016.04.27
- Published : 2016.04.28
Here we firstly present that a timing of reactivated event of Yangsan fault, the major fault in the southeastern Korean Peninsula, by using combined approaches of the optimized illite-polytype quantification, the K-Ar age-dating, and the recently developed illite-age-analysis (IAA) approach for the fault clays from Sangcheon-ri area of Yangsan main fault line. Two chronological record of brittle fault-activation event at about 41.5~43.5 and 50.7 Ma were determined from 3 fault gouges suggesting a crucial reactivation time-scheme. Furthermore, the regional processes that drive tectonics to form and reactivate the Yangsan fault may be explained from the chronological analysis for additional sites along the Yangsan fault.
Supported by : 한국기상산업진흥원
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