Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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WNW Trending Lineament and Criteria of Left-Lateral Displacement Around Haman-Uiryeong, Korea

함안-의령 일대 서북서 방향의 선상구조와 좌향이동 지시자

  • Ryoo, Chung-Ryul (Geology and Geoinformation Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Kim, Jong-Sun (Department of Earth Environmental System, Pusan National University) ;
  • Lee, Han-Yeang (Geology and Geoinformation Division, Korea Institute of Geoscience and Mineral Resources (KIGAM))
  • 류충렬 (한국지질자원연구원 지질기반정보연구부) ;
  • 김종선 (부산대학교 지구환경시스템학부) ;
  • 이한영 (한국지질자원연구원 지질기반정보연구부)
  • Published : 2008.08.28
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Abstract

Two half circular structures are developed in the northern and southern blocks which divided by the WNW-trending lineament around Uiryeong-Haman area, southern part of the Gyeongsang basin. By displacing one half circular structure to the other one about 750 m, a perfect circular structure is reconstructed. Thus the WNW-trending lineament is a left-lateral fault displacing the circular structure. The NNW trending ridges are dragged with anticlockwise sense near the WNW-trending fault, which indicates also the existence of a sinistral movement.

경상분지 남부의 함안-의령 일대에서 확인되는 서북서 방향의 선상구조를 중심으로 반원상의 지형구조가 이 선상구조를 중심으로 남측지괴와 북측지괴에 각각 발달하고 있다. 이틀을 우향으로 약 750m 이동하면 하나의 환상구조로 복원된다. 따라서 이 서북서 방향의 선상구조는 환상구조가 생겨난 이후 좌향의 전단운동을 겪은 단층으로 해석된다. 그리고 북북서 방향으로 달리는 산릉이 이 단층에 전하면서 반시계방향으로 끌림습곡을 보이는 양상 또한 좌향의 이동을 지시한다.

Keywords

References

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