Sedimentary records of paleoenvironmental changes during the last deglaciation in the Ulleung Interplain Gap, East Sea (Sea of Japan)
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Title
- Sedimentary records of paleoenvironmental changes during the last deglaciation in the Ulleung Interplain Gap, East Sea (Sea of Japan)
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Author(s)
- Bahk, JJ; Chough, SK; Jeong, KS; Han, SJ
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Alternative Author(s)
- 박장준; 정갑식; 한상준
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Publication Year
- 2001-02
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Abstract
- The Ulleung Basin in the East Sea (Sea of Japan) is a semi-enclosed basin surrounded by shallow sills and straits. Detailed observation of X-radiographs and thin sections of core sediments from the Ulleung Interplain Gap reveals five mud facies: laminated mud, crudely laminated mud, homogeneous mud, bioturbated mud and laminated Mn-carbonate mud. The laminated and homogenous muds were most likely deposited from turbidity currents, whereas the bioturbated and crudely laminated muds were formed by pelagic/hemipelagic sedimentation under oxic and anoxic bottom-water conditions, respectively. The laminated Mn-carbonate mud occurs at the lithologic boundary between the turbidite and hemipelagic laminated mud (last glacial) and the pelagic bioturbated mud (Lateglacial to Holocene). Mn-carbonates were formed at the sediment-water interface, probably reflecting an abrupt change in bottom-water oxygenation caused by sea-level rise during the last deglaciation. Profiles of redox-sensitive elements also support an anoxic to oxic change of bottom-water conditions during this period. (C) 2001 Elsevier Science B.V. All rights reserved.
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ISSN
- 0921-8181
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/5917
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DOI
- 10.1016/S0921-8181(00)00076-X
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Bibliographic Citation
- GLOBAL AND PLANETARY CHANGE, v.28, no.1-4, pp.241 - 253, 2001
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Publisher
- ELSEVIER SCIENCE BV
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Subject
- YOUNGER DRYAS EVENT; MARINE-SEDIMENTS; TURBIDITY CURRENTS; LATE PLEISTOCENE; BALTIC SEA; BASIN; MUDS; CALIFORNIA; MANGANESE; HOLOCENE
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Keywords
- Mn-carbonate; laminated mud; paleoceanography; Ulleung Interplain Gap
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Type
- Article
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Language
- English
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Document Type
- Article
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