Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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Analysis of Quaternary Sedimentary Environment based on 3D Geological Modeling for Saban-ri, Haeri-myeon, Gochang

고창군 해리면 사반리 일대 3차원 지질모델링을 활용한 제4기 퇴적환경분석

  • Shin, Haein (Department of Astronomy, Space Science, & Geology, Chungnam National University) ;
  • Yu, Jaehyung (Department of Geology and Earth Environmental Sciences, Chungnam National University) ;
  • Bae, Sungji (Department of Astronomy, Space Science, & Geology, Chungnam National University) ;
  • Yang, Dongyoon (Geological Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Han, Min (Graduate Program, Department of Geography Education, Seoul National University)
  • 신혜인 (충남대학교 우주.지질학과) ;
  • 유재형 (충남대학교 지질환경과학과) ;
  • 배성지 (충남대학교 우주.지질학과) ;
  • 양동윤 (한국지질자원연구원 국토지질연구본부) ;
  • 한민 (서울대학교 대학원 지리교육과)
  • Received : 2016.06.30
  • Accepted : 2016.08.25
  • Published : 2016.08.28
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Abstract

This study examined stratigraphic research containing extreme climate event during Quaternary period in Saban-ri, Haeri-myeon, Gochang by constructing 3D topographic model and 3D geological model. As a result of 3D topographic model and subsurface geological model, the geology of study area accumulated bedrock, Pleistocene series, and Holocene series chronologically. Most of the study area consist of bedrock on basement and Holocene series on upper layer. Additionally, Pleistocene series are presented as lens-shaped deposit on eastern part, and wedge-shaped deposit on northeastern part. Holocene layers consist of sand and clay-silt layer deposited sequentially where implies fluvial deposits on transgression environment. Distinctively, Pleistocene clayey silt layer and Holocene sand layer on eastern are observed as pond shape deposits that are considered as storm-related deposits originated from overwash system caused by extreme paleoclimate.

본 연구는 고창군 해리면 사반리에 대해 3차원 지표모델과 3차원 지질모델을 기반으로 고창지역의 제4기 극한 기후에 따른 퇴적기록 분포 특성에 대해 분석하였다. 3차원 지표지질 모델 및 하부지질모델을 구축한 결과, 연구지역의 지질은 기반암, 플라이스토세 퇴적층, 홀로세 퇴적층이 순차적으로 퇴적되었으며, 주로 기저부의 기반암과 상부의 홀로세 퇴적층이 주를 이룬다. 또한 플라이스토세 퇴적층은 연구지역의 동부에 렌즈상의 퇴적층으로, 북동부에 쐐기상의 형태로 관찰된다. 연구지역의 홀로세 퇴적층은 전체적으로 모래층과 점토질 실트층이 순차적으로 퇴적된 지역으로, 이는 해침 환경 당시 퇴적된 하성층으로 사료된다. 특징적으로 연구지역 동부에 분포하는 플라이스토세 점토질 실트층과 홀로세 모래층은 와지 형태로 관측되며 과거 극한기후에 민감하게 영향을 받는 오버워시에 의한 폭풍퇴적물로 사료된다.

Keywords

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