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Terrigenous supplies variability over the past 22,000 yr in the southern South China Sea slope: Relation to sea level and monsoon rainfall changes
Huang, Jie1; Jiang, Fuqing1,2; Wan, Shiming1,2; Zhang, Jin1; Li, Anchun1; Li, Tiegang1,2
2016-03-01
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
Volume117Issue:2016Pages:317-327
SubtypeArticle
AbstractChanging weathering intensity, sediment transport, and provenance variations over the past 22.0 lea BP have been investigated by high -resolution clay mineralogy, grain-size and stable oxygen isotopes of planktonic foraminifera records along core CG2 recovered from the continental slope of the Sunda Shelf (southern South China Sea). Our results indicated that the reworking of older sediments outcropping on the Sunda Shelf exerted a great influence on the sediment supply during the last glacial and most of the last deglacial, modulated by sea level and monsoon rainfall changes. During the last 9.01 a BP, relative increased kaolinite and heavier delta O-18(seawater) values might reflect the higher influence of the tropical Indonesian Islands sources due to the reopen of southern straits, implying the formation of modern oceanic circulation and depositional patterns. High sediment fluxes in core CG2 during Heinrich stadial 1 might be a synthetic result of the intensified monsoon rainfall originated from the southward shift of the Intertropical Convergence Zone and the proximal location of the study core before the flooding of the Sunda Shelf. Fluctuations in smectite/(illite + chlorite) ratios correlated well with monsoon intensity, and periods of strong monsoon rainfall (lighter delta O-18(seawater) values) were associated with an intensification of erosion of pre-existing, more weathered materials on the Sunda Shelf. Finally, we concluded that sediment composition and mineralogy in the southern South China Sea slope were controlled by varying degrees of reworking on the Sunda Shelf, as well as climatically modulated sediment supply from the Mekong River and southern tropical islands over the last 22.0 ka BP. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordGrain Size Clay Minerals Sea Level Changes East Asian Summer Monsoon Southern South China Sea
DOI10.1016/j.jseaes.2015.12.019
Indexed BySCI
Language英语
WOS IDWOS:000370111000023
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Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/112460
Collection海洋地质与环境重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Huang, Jie,Jiang, Fuqing,Wan, Shiming,et al. Terrigenous supplies variability over the past 22,000 yr in the southern South China Sea slope: Relation to sea level and monsoon rainfall changes[J]. JOURNAL OF ASIAN EARTH SCIENCES,2016,117(2016):317-327.
APA Huang, Jie,Jiang, Fuqing,Wan, Shiming,Zhang, Jin,Li, Anchun,&Li, Tiegang.(2016).Terrigenous supplies variability over the past 22,000 yr in the southern South China Sea slope: Relation to sea level and monsoon rainfall changes.JOURNAL OF ASIAN EARTH SCIENCES,117(2016),317-327.
MLA Huang, Jie,et al."Terrigenous supplies variability over the past 22,000 yr in the southern South China Sea slope: Relation to sea level and monsoon rainfall changes".JOURNAL OF ASIAN EARTH SCIENCES 117.2016(2016):317-327.
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