干旱区生态环境知识资源中心(Arid): Characteristics of a relative paleointensity record from loess deposits in arid central Asia and chronological implications

Arid

DOI	10.1016/j.quageo.2019.101034
	Characteristics of a relative paleointensity record from loess deposits in arid central Asia and chronological implications
	Li, Guanhua 1,2; Xia, Dunsheng 2; Appel, Erwin 3; Lu, Hao 2; Wang, Youjun 2; Jia, Jia 2; Yang, Xiaoqiang 1
通讯作者	Li, Guanhua ; Xia, Dunsheng
来源期刊	QUATERNARY GEOCHRONOLOGY
ISSN	1871-1014
EISSN	1878-0350
出版年	2020
卷号	55
英文摘要	Loess-paleosol sequences in the arid central Asia (ACA) provide valuable material for evaluating the evolution of paleoclimate and dust circulation in the Northern Hemisphere. However, determination of loess chronology has yet remained a main obstacle for paleoclimate interpretation. In this study, analyses of relative paleomagnetic intensity (RPI) were conducted in a loess section on the northern piedmont of the Tianshan Mountains covering the period since the last interglacial. The RPI record was found to be generally comparable with other recognized RPI stacks, confirming a globally consistent variation of the geomagnetic dipole field. Based on the RPI age model, the attempt to achieve paleoclimate assessment gives rise to largely similar variations to the North Atlantic records. Consequently, these results suggest that the RPI correlation could serve as a promising way to evaluate the age control of loess in the ACA. Nevertheless, in consideration of the complicated topography and loess deposition very close to the dust source, four main factors including carbon contamination, the reliability of luminescence signals, in situ depositional processes and complexity of remanence acquisition, may possibly contort the chronological determination in the ACA loess. Thus, cautions are still indispensable for paleoclimate interpretation with any solely chronological model and more work is therefore required to achieve a comprehensive understanding of loess chronological setting in this area.
英文关键词	Relative paleointensity Chronology Loess The arid central Asia Late quaternary
类型	Article
语种	英语
国家	Peoples R China ; Germany
收录类别	SCI-E
WOS记录号	WOS:000501937300007
WOS关键词	GEOMAGNETIC-FIELD INTENSITY ; SECULAR VARIATION RECORDS ; CHINESE LOESS ; HIGH-RESOLUTION ; SEDIMENTARY RECORDS ; MAGNETIC-PROPERTIES ; TIANSHAN MOUNTAINS ; ACQUISITION CURVES ; MOMENT VARIATION ; NORTH-ATLANTIC
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
EI主题词	2020-02-01
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312665
作者单位	1.Sun Yat Sen Univ, Southern Lab Ocean Sci & Engn Guangdong Zhuhai, Zhuhai 519000, Guangdong, Peoples R China; 2.Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China; 3.Eberhard Karls Univ Tubingen, Dept Geosci, D-72074 Tubingen, Germany
推荐引用方式 GB/T 7714	Li, Guanhua,Xia, Dunsheng,Appel, Erwin,et al. Characteristics of a relative paleointensity record from loess deposits in arid central Asia and chronological implications[J]. 兰州大学,2020,55.
APA	Li, Guanhua.,Xia, Dunsheng.,Appel, Erwin.,Lu, Hao.,Wang, Youjun.,...&Yang, Xiaoqiang.(2020).Characteristics of a relative paleointensity record from loess deposits in arid central Asia and chronological implications.QUATERNARY GEOCHRONOLOGY,55.
MLA	Li, Guanhua,et al."Characteristics of a relative paleointensity record from loess deposits in arid central Asia and chronological implications".QUATERNARY GEOCHRONOLOGY 55(2020).