Journal of The Geomorphological Association of Korea (한국지형학회지)

The Geomorphological Association of Korea (한국지형학회)
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The Evidence for the High Sea Level of MIS 5e and the Paleo-coastal Sediments from Sinji-myen, Wando-gun, Jeollanam-do, Korea

전남 완도군 신지면 일대의 고해안퇴적층과 최종간빙기 고해수면 증거

  • Shin, Won Jeong (Department of Geography Education, Seoul National University) ;
  • Lee, Jae Ho (Team of National Ecosystem Survey, National Institute of Ecology) ;
  • Byun, Jongmin (Department of Geography Education, Seoul National University) ;
  • Kim, Jong Yeon (Department of Geography Education, Chungbuk National University)
  • 신원정 (서울대학교 지리교육과) ;
  • 이재호 (국립생태원 자연환경조사팀) ;
  • 변종민 (서울대학교 지리교육과) ;
  • 김종연 (충북대학교 지리교육과)
  • Received : 2019.03.19
  • Accepted : 2019.03.29
  • Published : 2019.03.30
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Abstract

The physical and chemical characteristics of more than 5 m sandy deposits behind the beach in Sinji-do Island are investigated and its burial ages are estimated using Optically Stimulated Luminescence. By the estimated burial ages of the sandy deposits, this section is divided into four sub-units: Unit I (6.2 ka), Unit II (23.2 ka), Unit III (115.9 ka), and Unit IV (115.9 to 127.5 ka). It can be proposed that the Unit I of a coarse sand deposited during the Holocene Climatic Optimum. Unit II, supposed to be the aeolian sediments, formed during the Last Glacial Maximum (LGM). It can be supposed that the study area was not affected by the marine processes during the LGM, directly. Unit III is more consolidated deposits of coarse silt to fine sand and deposited during the Last Interglacial Period. Unit IV mainly consist of beach gravels with sandy matrix deposited during the Marine Isotope Stage 5e (MIS 5e), and thus indicates that the sea level of the southwest sea had risen 3 to 5 m above present sea level during the MIS 5e.

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