Late Quaternary Seismic Stratigraphy and Sedimentation of the Southeastern Continental Shelf, Korea Strait

한국 남동해역(대한해협) 대륙붕지역의 후 제4기 탄성파 층서 및 퇴적작용

  • Yoo Dong-Geun (Petroleum and Marine Resources Division, Korea Institute of Geoscience and Mineral Resource) ;
  • Lee Chi-Won (Petroleum and Marine Resources Division, Korea Institute of Geoscience and Mineral Resource) ;
  • Min Gun-Hong (Petroleum and Marine Resources Division, Korea Institute of Geoscience and Mineral Resource) ;
  • Lee Ho-Young (Petroleum and Marine Resources Division, Korea Institute of Geoscience and Mineral Resource) ;
  • Choi Joung-Gyu (Petroleum and Marine Resources Division, Korea Institute of Geoscience and Mineral Resource) ;
  • Park Soo-Chul (Oceanography Department, Chungnam National University)
  • 유동근 (한국지질자원연구원 석유해저자원연구부) ;
  • 이치원 (한국지질자원연구원 석유해저자원연구부) ;
  • 민건홍 (한국지질자원연구원 석유해저자원연구부) ;
  • 이호영 (한국지질자원연구원 석유해저자원연구부) ;
  • 최종규 (한국지질자원연구원 석유해저자원연구부) ;
  • 박수철 (충남대학교 해양학과)
  • Published : 2005.08.01

Abstract

Interpretation of high-resolution seismic profiles from the southeastern continental shelf of Korea reveals that the sedimentary deposits consist of seven seismic units formed during the late Quaternary. These units comprise lowstand, transgressive, and highstand systems tracts. The lowstand systems tract consists of a lowstand prograding wedge (SU1) and a mass flow deposit (SU2) including slumps and slides. The transgressive systems tract contains four seismic units: an ancient beach/shoreface deposit (SU3), a channel-fill deposit (SU4), a transgressive sand layer (SU5), and a transgressive sand ridge (SU6). The highstand systems tract consists of an inner-shelf mud deposit (SU7) derived from the Nakdong and Seomjin rivers during the last 6 ka when sea level was close to the present level.