中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Variations of magnetic proxies in core BH08 from Bohai Sea and its environmental implications

文献类型:期刊论文

作者Dong JingWen1,2,4; Yao ZhengQuan3,4; Shi XueFa3,4; Jiang ZhaoXia4,5; Liu QingSong4,6
刊名CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
出版日期2018-11-01
卷号61期号:11页码:4530-4544
ISSN号0001-5733
关键词Bohai Sea Core BH08 Magnetic mineral Environmental magnetism Sea level
DOI10.6038/cjg2018M0020
英文摘要Marginal sea is an ideal area for studying the interaction of ocean and continent, and its sediment has recorded valuable information of climate and tectonic change. As an important part of Chinese marginal sea, previous researchers have systematically conducted magnetic and paleoclimatic studies on sediments of the Bohai Sea. However, due to complex environmental influences, the magnetic variation mechanism of the Bohai sediments is complicated. In this paper, we study magnetic properties of BH08 core sediments from the Bohai Sea. The core BH08 was drilled to a depth of 212. 4 m in the central Bohai Sea with water depth of similar to 25 m. Magnetic measurements were carried out on selected samples, mainly including the magnetic susceptibility (chi, mass specific), hysteresis loop, acquisition curve of isothermal remanent magnetization (IRM), the first-order reversal curve (FORC) diagram, temperature dependent curves of magnetic susceptibility (chi-T curve) and low-temperature remanent magnetization curves. Results indicate: 1) the main magnetic minerals in sediments are magnetite and greigite, along with some high coercivity minerals such as hematite; 2) magnetic variations are complicated, and are controlled mainly by the fluctuation of sea level according to the correlation between magnetic parameters and S/Cl value, redness (a*) and delta O-18; 3) greigite has been spotted in some layers, which indicates rapid changes in the depositional environment. Based on the high resolution chronology from Yao et al. (2014), we discussed the variation mechanism for magnetic proxies and its environmental implications, which are significant for the following environmental studies in the area.
WOS关键词LOESS-PALEOSOL SEQUENCE ; YELLOW-RIVER ; GREIGITE FE3S4 ; SEDIMENTS ; CHINA ; SUSCEPTIBILITY ; PEDOGENESIS ; TRANSFORMATION ; ENHANCEMENT ; VARIABILITY
WOS研究方向Geochemistry & Geophysics
语种英语
出版者SCIENCE PRESS
WOS记录号WOS:000450699100018
源URL[http://ir.iggcas.ac.cn/handle/132A11/89596]  
专题地质与地球物理研究所_其他部门
通讯作者Liu QingSong
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China
4.Natl Lab Marine Sci & Technol, Lab Marine Geol & Environm, Qingdao 266237, Peoples R China
5.Ocean Univ China, Coll Marine Geosci, MOE, Key Lab Submarine Geosci & Prospecting Tech, Qingdao 266100, Peoples R China
6.Southern Univ Sci & Technol, Dept Marine Sci & Engn, Shenzhen 518055, Peoples R China
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Dong JingWen,Yao ZhengQuan,Shi XueFa,et al. Variations of magnetic proxies in core BH08 from Bohai Sea and its environmental implications[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(11):4530-4544.
APA Dong JingWen,Yao ZhengQuan,Shi XueFa,Jiang ZhaoXia,&Liu QingSong.(2018).Variations of magnetic proxies in core BH08 from Bohai Sea and its environmental implications.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(11),4530-4544.
MLA Dong JingWen,et al."Variations of magnetic proxies in core BH08 from Bohai Sea and its environmental implications".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.11(2018):4530-4544.

入库方式: OAI收割

来源:地质与地球物理研究所

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