Reconstruction of high-resolution magnetostratigraphy of the Changjiang (Yangtze) River Delta, China

doi:10.1093/gji/ggv497

	Reconstruction of high-resolution magnetostratigraphy of the Changjiang (Yangtze) River Delta, China
	Duan, Zongqi 1; Liu, Qingsong 1,2; Shi, Xuefa 2,3; Yao, Zhengquan 2,3; Liu, Jianxing 1; Su, Kai 4
刊名	GEOPHYSICAL JOURNAL INTERNATIONAL
	2016-02
卷号	204 期号:2 页码:948-960
关键词	Magnetic fabrics and anisotropy magnetostratigraphy Rock and mineral magnetism
ISSN号	0956-540X
DOI	10.1093/gji/ggv497
英文摘要	A detailed magnetic analysis has been conducted on the borehole CJ-1 (172.3 m in length) from the Changjiang (Yangtze) River delta. Results show that the dominant magnetic carriers are magnetite and hematite. Palaeomagnetic results reveal that high-frequency changes in palaeomagnetic inclinations are tied significantly to abnormal anisotropy of magnetic susceptibility (AMS) patterns due to effects of the high-energy depositional environment in this region. On the basis of AMS patterns, doubtful palaeomagnetic directional anomalies can be distinguished from authentic palaeomagnetic excursions. Magnetostratigraphic results indicate that the Matuyama-Brunhes boundary (MBB) was recorded at a depth of similar to 152.5 m. The presence of several short-lived inclination anomalies implied that the sedimentation could be continuous even at the millennial timescale at certain depth intervals bracketing these fast geomagnetic events. In summary, our study provides new insights into constructing reliable magnetostratigraphy in the delta region. Moreover, our new magnetostratigraphy of the Changjiang River delta deposits will facilitate studies on the relevant long-term palaeoenvironmental evolution of the delta.
资助项目	State Oceanic Administration of China[908-01-BC15]
WOS关键词	INCISED-VALLEY FILL ; M-RS/M-S ; LATE QUATERNARY ; EASTERN CHINA ; PALEOENVIRONMENTAL CHANGES ; MAGNETIC-SUSCEPTIBILITY ; LOESS PLATEAU ; GRAIN-SIZE ; SEDIMENTS ; EVOLUTION
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000368427100021
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25550]
专题	自然资源部第一海洋研究所
通讯作者	Duan, Zongqi
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Natl Oceanog Lab, Funct Lab Marine Geol, Qingdao 266061, Peoples R China 3.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China 4.CNOOC Ltd, Tianjin Branch, Bohai Oil field Res Inst, Tianjin, Peoples R China
推荐引用方式 GB/T 7714	Duan, Zongqi,Liu, Qingsong,Shi, Xuefa,et al. Reconstruction of high-resolution magnetostratigraphy of the Changjiang (Yangtze) River Delta, China[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2016,204(2):948-960.
APA	Duan, Zongqi,Liu, Qingsong,Shi, Xuefa,Yao, Zhengquan,Liu, Jianxing,&Su, Kai.(2016).Reconstruction of high-resolution magnetostratigraphy of the Changjiang (Yangtze) River Delta, China.GEOPHYSICAL JOURNAL INTERNATIONAL,204(2),948-960.
MLA	Duan, Zongqi,et al."Reconstruction of high-resolution magnetostratigraphy of the Changjiang (Yangtze) River Delta, China".GEOPHYSICAL JOURNAL INTERNATIONAL 204.2(2016):948-960.