Geochemical characteristics of sediment in core 07 since <br/>the late Pleistocene in Laizhou Bay

Guo Fei; Gao Maosheng; Hou Guohua; Kong Xianghuai; Zhao Jinming; Zheng Yimin; Zhao Guangming

doi:10.3969/j.issn.0253-4193.2016.03.014

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Guo Fei, Gao Maosheng, Hou Guohua, Kong Xianghuai, Zhao Jinming, Zheng Yimin, Zhao Guangming. Geochemical characteristics of sediment in core 07 since the late Pleistocene in Laizhou Bay[J]. Haiyang Xuebao, 2016, 38(3): 145-155. doi: 10.3969/j.issn.0253-4193.2016.03.014

Citation:

Guo Fei, Gao Maosheng, Hou Guohua, Kong Xianghuai, Zhao Jinming, Zheng Yimin, Zhao Guangming. Geochemical characteristics of sediment in core 07 since
the late Pleistocene in Laizhou Bay[J]. Haiyang Xuebao, 2016, 38(3): 145-155. doi: 10.3969/j.issn.0253-4193.2016.03.014

Citation:

Guo Fei, Gao Maosheng, Hou Guohua, Kong Xianghuai, Zhao Jinming, Zheng Yimin, Zhao Guangming. Geochemical characteristics of sediment in core 07 since
the late Pleistocene in Laizhou Bay[J]. Haiyang Xuebao, 2016, 38(3): 145-155. doi: 10.3969/j.issn.0253-4193.2016.03.014

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Geochemical characteristics of sediment in core 07 since
the late Pleistocene in Laizhou Bay

doi: 10.3969/j.issn.0253-4193.2016.03.014

1.
School of Geosciences, China University of Petroleum, Qingdao 266555, China;Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao Institute of Marine Geology, Qingdao 266071, China;Key Laboratory of Coastal Wetland Biogeosciences, China Geological Survey, Qingdao Institute of Marine Geology, Qingdao 266071, China
2.
Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao Institute of Marine Geology, Qingdao 266071, China;Key Laboratory of Coastal Wetland Biogeosciences, China Geological Survey, Qingdao Institute of Marine Geology, Qingdao 266071, China
3.
Exploration Institute of Geology and Mineral Resources, Weifang 261021, China

Received Date: 2015-04-23
Rev Recd Date: 2015-08-02

Abstract

Abstract

Forty eight geochemical indexs of sediment samples,including major element,trace element and rare earth element(REE) content,were analyzed by X-ray fluorescence spectrometry (XRF),ion-coupled plasma-mass spectroscopy(ICP-MS) and atomic fluorescence spectrometry (AF) for the samples of core 07 obtained in the southern coast of Laizhou Bay. Meanwhile,the elements content,changing law,the characteristic ratio and distribution patterns of REE were studied. According to research,most elements and characteristic ratios in borehole 07 changed obviously in marine-continental stratigraphic boundaries,which could be used to divide stratum. In addition,Mn,Mg,Ca,Fe,Mg/Ca and K/Na were well correlated with sedimentary environment changes; Ba,Zr,Rb,Si/A1,Ti/A1 and Rb/Sr could be utilized to trace the type of source rock,weathering degree and the transport distance. Majority elements showed multi-cycle variation,especially in the transgression layers. The stratigraphic features reflected by the changes in chemical elements were well corresponding to climatic and sea-level changes since the late Pleistocene. The Chondrite-normalized REE distribution patterns of sediments in borehole 07 with different depth were similar to that Yellow River,and the LREE content was much higher than HREE,which indicated that Yellow River was one of provenances of Mihe-WeiHe multi-source fluvial delta sedimentary system in the south of Laizhou Bay,contributing to sedimentary strata within a certain range of depth.
- Laizhou Bay,
- geochemistry,
- provenance,
- sedimentary environment

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References(30)

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