양산단층대 북부 유계-보경사지역의 조구조지형학적 분석Tectonic Geomorphology on Yugye-Bogyeongsa Area of Yangsan Fault Zone
- Other Titles
- Tectonic Geomorphology on Yugye-Bogyeongsa Area of Yangsan Fault Zone
- Authors
- 이초희; 성영배; 오정식; 김동은
- Issue Date
- 2019
- Publisher
- 한국지형학회
- Keywords
- Yugye Fault; strike-slip fault; geomorphic marker; knickpoint; 유계단층; 주향이동단층; 지형지시자; 천이점
- Citation
- 한국지형학회지, v.26, no.1, pp.93 - 106
- Indexed
- KCI
- Journal Title
- 한국지형학회지
- Volume
- 26
- Number
- 1
- Start Page
- 93
- End Page
- 106
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/70714
- ISSN
- 1226-4296
- Abstract
- The Yangsan Fault is one of the main fault systems in the Korean peninsula. It can be divided into three segments (northern, central, and southern) by its paleoseismic and structural geologic properties. Based on the geomorphic features of the northern segment, which includes the Yugye Fault, we identified deflected streams as a geomorphic marker of strike-slip component of the fault, and knickpoints along the streams as evidence of dip-slip component of the fault. Geomorphic analyses showed that (1) the horizontal displacements of deflected streams decreased and (2) the retreat amounts of knickpoints tend to increased toward north along the lineament. We interpreted the variations caused by strain partitioning; that is, there might be some increases of the vertical component toward north, whereas the main strike-slip fault system dies out, splaying into horsetail structure toward north. Based on the response time of the landforms, these interpretations imply that (1) there were differences between horizontal slip rate and vertical slip rate along strike, and/or (2) there were different timings between horizontal and vertical deformations by fault.
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Collections - College of Education > Department of Geography Education > 1. Journal Articles
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