Original Article

Econ. Environ. Geol. 2016; 49(2): 97-104

Published online April 30, 2016

https://doi.org/10.9719/EEG.2016.49.2.97

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Reactivated Timings of Yangsan Fault in the Sangcheon-ri Area, Korea

Yungoo Song1*, Changyun Park1, Ho Sim1, Woohyun Choi1, Moon Son2, and Chuluunbaatar Khulganakhuu1

1Department of Earth System Sciences, Yonsei University, Seoul 120-749, Korea
2Department of Geological Sciences, Pusan National University, Pusan 609-735, Korea

Correspondence to : yungoo@yonsei.ac.kr

Received: April 12, 2016; Accepted: April 27, 2016

Abstract

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.

Keywords Yangsan fault, Fault reactivation age, Illite-age-analysis(IAA), K-Ar age-dating, Fault clay

상천리 일대 양산단층의 재활동 연대

송윤구1*, 박창윤1, 심 호1, 최우현1, 손 문2, Chuluunbaatar Khulganakhuu1

1연세대학교 지구시스템과학과, 2부산대학교 지질환경과학과

요 약

Article

Original Article

Econ. Environ. Geol. 2016; 49(2): 97-104

Published online April 30, 2016 https://doi.org/10.9719/EEG.2016.49.2.97

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Reactivated Timings of Yangsan Fault in the Sangcheon-ri Area, Korea

Yungoo Song1*, Changyun Park1, Ho Sim1, Woohyun Choi1, Moon Son2, and Chuluunbaatar Khulganakhuu1

1Department of Earth System Sciences, Yonsei University, Seoul 120-749, Korea
2Department of Geological Sciences, Pusan National University, Pusan 609-735, Korea

Correspondence to:yungoo@yonsei.ac.kr

Received: April 12, 2016; Accepted: April 27, 2016

Abstract

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.

Keywords Yangsan fault, Fault reactivation age, Illite-age-analysis(IAA), K-Ar age-dating, Fault clay

상천리 일대 양산단층의 재활동 연대

송윤구1*, 박창윤1, 심 호1, 최우현1, 손 문2, Chuluunbaatar Khulganakhuu1

1연세대학교 지구시스템과학과, 2부산대학교 지질환경과학과

Received: April 12, 2016; Accepted: April 27, 2016

요 약

    KSEEG
    Apr 30, 2024 Vol.57 No.2, pp. 107~280

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