Seismic reflection imaging of Quaternary faulting offshore the southeastern Korean Peninsula
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Title
- Seismic reflection imaging of Quaternary faulting offshore the southeastern Korean Peninsula
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Author(s)
- Kim, Han-Joon; Baek, YoungSook; Jou, Hyeong-Tae; Lee, Sang Hoon; Moon, Seonghoon; Kim, Jin Soo; Lee, Su-hwan; Lee, Gwang Hoon; Kang, Seung-Goo; Son, Woo-Hyun; Seok, Ryeongsim
- KIOST Author(s)
- Lee, Sang Hoon(이상훈); Lee, Su Hwan(이수환)
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Alternative Author(s)
- 김한준; 백영숙; 주형태; 이상훈; 문성훈; 김진수; 이수환
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Publication Year
- 2016-06
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Abstract
- The Yangsan Fault System (YFS) is a dominating tectonic structure in the southeastern part of the Korean Peninsula. The YFS consists of NNE-striking dextral strike-slip faults that are traced to the southeastern coast of the Korean Peninsula. We acquired high-resolution seismic profiles offshore the southeastern Korean Peninsula to investigate how the YFS extends offshore and constrain the age of fault activity using stratigraphic interpretation. The seismic profiles image near-vertical faults trending NE to NNE that constitute a fault zone similar to a duplex structure at a releasing bend of a right-lateral strike-slip fault. The faults are interpreted as an offshore extension of the Ilgwang fault that is a member of the YFS. Stratigraphic interpretation of seismic profiles indicates that the offshore faults were activated repeatedly in the Pliocene and Quaternary. The right-lateral activity of the Ilgwang fault is consistent with the current stress regime in and around the southeastern Korean Peninsula that dictates the P-axis direction in the E-W or ENE-WSW since the Pliocene.
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ISSN
- 1226-4806
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/2184
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DOI
- 10.1007/s12303-015-0055-9
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Bibliographic Citation
- GEOSCIENCES JOURNAL, v.20, no.3, pp.311 - 319, 2016
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Publisher
- GEOLOGICAL SOCIETY KOREA
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Subject
- PLATE; EVOLUTION; SHELF; ZONE; SEA; ARC
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Keywords
- seismic profiling; Ilgwang fault; Quaternary deformation; offshore fault zone
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Type
- Article
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Language
- English
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Document Type
- Article
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