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Sr-Nd isotopic geochemistry of Holocene sediments from the South Yellow Sea: Implications for provenance and monsoon variability
Hu, Bangqi1,2,3; Li, Jun1,2; Zhao, Jingtao1; Yan, Hong3; Zou, Liang1; Bai, Fenglong1; Xu, Fangjian4; Yin, Xuebo5; Wei, Gangjian6
2018-02-20
发表期刊CHEMICAL GEOLOGY
卷号479页码:102-112
文章类型Article
摘要Elemental geochemical and Sr-Nd isotopic signatures are used to decipher terrigenous sediments provenances and transport mechanisms in the South Yellow Sea during the Holocene. Sr-87/Sr-86 ratios in the Chinese and Korean riverine sediments overlap each other, whereas epsilon Nd values of Korean riverine sediments are generally less radiogenic in comparison to the Changjiang and Huanghe. Moreover, eNd values of these two large rivers appear unaffected by mineral sorting and are relative stable during the Holocene. We propose a three end-members (i.e., the Changjiang, the Huanghe, and Korean rivers) mixing model to explain sediment provenances in the Central Yellow Sea Mud (CYSM). Mixing calculations show that the Huanghe is the major sediment contributor to the CYSM before similar to 8 ka (thousand years before 1950 CE), whereas the Changjiang has become the predominant sediment source after similar to 8 ka. Holocene changes in riverine sediment supplies to the CYSM are closely related to the oceanic circulation, monsoon climate, and drainage changes. After examining several hypotheses to explain the variations in Sr-87/Sr-86 ratios of Core YSC-1 during the past similar to 8 kyr, we tentatively attribute that to changes in the erosion patterns of the Changjiang Basin. This in turn is associated with the asynchronous evolution of monsoon precipitation in the upper (Indian Summer Monsoon) and middle-lower Changjiang (East Asian Summer Monsoon). Therefore, our results highlight significant influences of monsoon climate on erosion patterns within the Changjiang catchment at millennial timescales.
关键词Sr-nd Isotopes Provenance Monsoon Yellow Sea Holocene
DOI10.1016/j.chemgeo.2017.12.033
收录类别SCI
语种英语
WOS记录号WOS:000425891200008
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文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/154351
专题海洋地质与环境重点实验室
作者单位1.China Geol Survey, Qingdao Inst Marine Geol, Minist Land & Resources, Key Lab Marine Hydrocarbon Resources & Environm G, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China
4.China Univ Petr, Sch Geosci, Qingdao 266580, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
6.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China
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Hu, Bangqi,Li, Jun,Zhao, Jingtao,et al. Sr-Nd isotopic geochemistry of Holocene sediments from the South Yellow Sea: Implications for provenance and monsoon variability[J]. CHEMICAL GEOLOGY,2018,479:102-112.
APA Hu, Bangqi.,Li, Jun.,Zhao, Jingtao.,Yan, Hong.,Zou, Liang.,...&Wei, Gangjian.(2018).Sr-Nd isotopic geochemistry of Holocene sediments from the South Yellow Sea: Implications for provenance and monsoon variability.CHEMICAL GEOLOGY,479,102-112.
MLA Hu, Bangqi,et al."Sr-Nd isotopic geochemistry of Holocene sediments from the South Yellow Sea: Implications for provenance and monsoon variability".CHEMICAL GEOLOGY 479(2018):102-112.
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