Development of sedimentary sequence in the Masan Bay, South Sea of Korea SCOPUS KCI

Title
Development of sedimentary sequence in the Masan Bay, South Sea of Korea
Author(s)
Choi, D.-L.; Lee, T.-H.
KIOST Author(s)
Lee, Taehee(이태희)
Publication Year
2007
Abstract
We studied the bottom morphology and sedimentary environments of the Masan Bay using high-resolution Chirp seismic profiles and sediments data. According to deep-drilled core samples (up to 20 m thick) penetrated into the weathered rock basement, the sediments consist largely of three sediment types: the lower sandy gravel facies (Unit I) of 1-4 m in thickness, the middle sandy mud and/or muddy sand facies (Unit II) of 1-2 m thick and the upper muffacies (Unit III) of over 10 m in thickness. The sedimentary column above the acoustic basement can be divided into two major sequences by a relatively strong mid-reflector, which show the lower sedimentary sequence (T) with parallel to subparallel internal reflectors and the upper sedimentary sequence (H) with free acoustic patterns. Acoustic basement, the lower sedimentary sequence (T), and the upper sequence (H) are well correlated with poorly sorted massive sandy gravels (Unit I), the sand/mud-mixed sediment (Unit II), and the muddy facies (Unit III), respectively. The acoustic facies and sediment data suggest that the Masan bay is one of the most typical semi-enclosed coastal embayments developed during the Holocene sea-level changes. The area of the Masan Bay reduced from about 19 km2 in 1964 to about 13 km2 in 2005 by reclamation, and its bottom morphology changed as a result of dredging of about 2 × 107 m3.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4771
DOI
10.4217/OPR.2007.29.4.411
Bibliographic Citation
Ocean and Polar Research, v.29, no.4, pp.411 - 418, 2007
Publisher
Korea Ocean Research and Development Institute
Subject
deep drilling; depositional environment; Holocene; morphology; mud; sand and gravel; sea level change; sedimentary sequence; seismic data; semienclosed sea; Asia; Eurasia; Far East; Korea; Masan Bay; South Korea; South Kyongsang
Keywords
Chirp seismic data; Deep-drilled core; Masan Bay; Sedimentary sequence
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Marine Geochemistry,Marine Environment,Oceanography,해양지화학,해양환경,해양학

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