Geomagnetic paleointensity dating of South China Sea sediments for the last 130 kyr

doi:10.1016/j.epsl.2009.04.035

GIEC OpenIR > 中国科学院广州能源研究所

	Geomagnetic paleointensity dating of South China Sea sediments for the last 130 kyr
	Yang Xiaoqiang 1; Friedrich Heller 2; Wu Nengyou 3; Yang Jie 1; Su Zhihua 1
	2009-06-30
发表期刊	EARTH AND PLANETARY SCIENCE LETTERS
ISSN	0012-821X
卷号	284 期号:1-2 页码:258-266
通讯作者	eesyxq@mail.sysu.edu.cn
摘要	Relative paleointensity records from the northern South China Sea, northwest Pacific Ocean were studied in two gravity piston cores. Continuous mineral magnetic and paleomagnetic measurements were made using discrete sediment samples. Detailed rock magnetic parameters, such as thermomagnetic and high-field hysteresis data, indicate that pseudo-single domain magnetite in a narrow range of grain-size and concentration is the main contributor to the remanent magnetization. The uniform magnetic mineralogy meets the commonly accepted criteria for establishing relative paleointensity records. The relative paleointensity (RPI) curves were constructed by normalizing the natural remanent magnetization (NRM) with isothermal remanent magnetization (IRM), both in the 20-60 mT demagnetization state. Dating constraints have been provided by radiocarbon ages in the upper 400 cm of both cores. Furthermore, we have correlated our paleointensity records with NAPIS-75, S.Atlantic-1089, Sint-200 and NOPAPIS-250 to determine the chronological RPI framework for the South China Sea (SCS-PIS). Although some temporal offsets of paleointensity features between the different records have been recognized, their similar shape suggests that relative paleointensity on the 10(3)-10(4) year scale is globally coherent and can provide an age framework for sediments independent of delta(18)O ages. (C) 2009 Elsevier B.V. All rights reserved.
文章类型	Article
其他摘要	Relative paleointensity records from the northern South China Sea, northwest Pacific Ocean were studied in two gravity piston cores. Continuous mineral magnetic and paleomagnetic measurements were made using discrete sediment samples. Detailed rock magnetic parameters, such as thermomagnetic and high-field hysteresis data, indicate that pseudo-single domain magnetite in a narrow range of grain-size and concentration is the main contributor to the remanent magnetization. The uniform magnetic mineralogy meets the commonly accepted criteria for establishing relative paleointensity records. The relative paleointensity (RPI) curves were constructed by normalizing the natural remanent magnetization (NRM) with isothermal remanent magnetization (IRM), both in the 20-60 mT demagnetization state. Dating constraints have been provided by radiocarbon ages in the upper 400 cm of both cores. Furthermore, we have correlated our paleointensity records with NAPIS-75, S.Atlantic-1089, Sint-200 and NOPAPIS-250 to determine the chronological RPI framework for the South China Sea (SCS-PIS). Although some temporal offsets of paleointensity features between the different records have been recognized, their similar shape suggests that relative paleointensity on the 10(3)-10(4) year scale is globally coherent and can provide an age framework for sediments independent of delta O-18 ages.
关键词	South China Sea Relative Paleointensity Chronology
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1016/j.epsl.2009.04.035
研究领域[WOS]	Geochemistry & Geophysics
URL	查看原文
关键词[WOS]	INTER-HEMISPHERIC CORRELATION ; RELATIVE PALEOINTENSITY ; NORTH-ATLANTIC ; LATE PLEISTOCENE ; LOESS PLATEAU ; LABRADOR-SEA ; SULU SEA ; 300 KA ; RECORD ; INTENSITY
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China [40674034]; Natural Science Foundation of Guangdong province, China [06023110]
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000268438900028
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/3310
专题	中国科学院广州能源研究所
作者单位	1.Sun Yat Sen Univ, Dept Earth Sci, Guangzhou 510275, Guangdong, Peoples R China 2.Swiss Fed Inst Technol, Inst Geophys, CH-8092 Zurich, Switzerland 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Yang Xiaoqiang,Friedrich Heller,Wu Nengyou,et al. Geomagnetic paleointensity dating of South China Sea sediments for the last 130 kyr[J]. EARTH AND PLANETARY SCIENCE LETTERS,2009,284(1-2):258-266.
APA	Yang Xiaoqiang,Friedrich Heller,Wu Nengyou,Yang Jie,&Su Zhihua.(2009).Geomagnetic paleointensity dating of South China Sea sediments for the last 130 kyr.EARTH AND PLANETARY SCIENCE LETTERS,284(1-2),258-266.
MLA	Yang Xiaoqiang,et al."Geomagnetic paleointensity dating of South China Sea sediments for the last 130 kyr".EARTH AND PLANETARY SCIENCE LETTERS 284.1-2(2009):258-266.

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