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Sequence Stratigraphy of Late Quaternary Deposits in the Southeastern Continental Shelf, Korea  

유동근 (한국지질자원연구원 석유해저연구부)
이치원 (한국지질자원연구원 석유해저연구부)
최진용 (군산대학교 해양정보과학과)
박수철 (충남대학교 해양학과)
최진혁 (국방과학연구소)
Publication Information
The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY / v.8, no.4, 2003 , pp. 369-379 More about this Journal
Abstract
Analysis of high-resolution seismic profiles and sediment data from the southeastern continental shelf of Korea reveals that the late Quaternary deposits consist of a set of lowstand (LST), transgressive (TST), and highstand systems tracts (HST) that corresponds to the sea-level change after the Last Glacial Maximum. LST (Unit I) above the sequence boundary consists of sandy mud or muddy sand deposited during the last glacial period and is confined to the shelf margin and trough region. TST (Unit II) between transgressive surface and maximum flooding surface consists of sandy sediments deposited during the postglacial transgression (15,000-6,000 yr BP). Although TST is widely distributed on the shelf, it is much thinner than LST and HST. On the basis of distribution pattern, TST can be divided into three sub-units: early TST (Unit IIa) on the shelf margin, middle TST (Unit IIb) on the mid-shelf, and late TST (Unit IIc) on the inner shelf, respectively. These are characterized by a backstepping depositional arrangement. HST(Unit III) above the maximum flooding surface is composed of the fine-grained sediments deposited during the last 6000 yrs when sea level was close to the present level and its distribution is restricted to the inner shelf along the coast.
Keywords
Late Quaternary; Sequence Stratigraphy; Sea-Level Change; Southeastern Continental Shelf;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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