干旱区生态环境知识资源中心(Arid): Chronostratigraphy of a loess-paleosol sequence in the western Chinese Loess Plateau based on ESR dating and magnetostratigraphy

Arid

DOI	10.1016/j.quaint.2022.08.005
	Chronostratigraphy of a loess-paleosol sequence in the western Chinese Loess Plateau based on ESR dating and magnetostratigraphy
	Niu, Yanning; Fan, Yuxin; Qiao, Yansong; Lu, Tongyan; Li, Chaozhu; Qi, Lin; Wang, Sheng; Peng, Shasha; Tan, Yuanlong
通讯作者	Fan, YX
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2022
卷号	637 页码:1-11
英文摘要	The western area of the Chinese Loess Plateau (CLP) is close to the northeastern margin of the Tibetan Plateau (NTP) and arid regions of northern China. Loess-paleosol sequence is a good archive for studying the variation of the East Asian summer monsoon (EASM) and the evolutionary history of paleoclimate. However, excessive remagnetization makes it challenging to infer the location of the time-scaled strata, and only a few highresolution long scale paleomagnetic data are available from the western CLP. To solve this problem, this paper presents a study on establishing a Quaternary chronological framework using the traditional paleomagnetic method and quartz electron spin resonance (ESR) dating. The result is validated by comparing sequences in a variation of magnetic susceptibility and grain-size. Detailed thermal demagnetization records show that declination is reversed, but the inclination reversal is not apparent between S7 and S8. ESR estimated that the three samples collected at a depth of -112-145 m were 853.51 +/- 133.43 ka, 962.12 +/- 144.30 ka, and 1004.27 +/- 206.86 ka, respectively. Constrained by these ESR dates, the age of the L9-L15 is defined as -0.9-1.2 Ma, which is corroborated the observation in the field stratigraphic survey, the characteristics of magnetic susceptibility and grain-size data. Based on these ages, the Matuyama and Brunhes boundary (MBB, -0.78 Ma) is deduced in L8 as inferred from the declination sequence. The bottom age of the loess-paleosol sequence extrapolated from the sedimentation rate is 2.13 Ma. The chronological sequence is therefore established. Several environmental indexes were changed coordinately in broad areas based on the chronological framework, indicating that it is logical and reliable.
英文关键词	NTP Western CLP Loess-paleosol sequence Paleomagnetism ESR dating Chronological framework
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000862821000001
WOS关键词	ELECTRON-SPIN-RESONANCE ; GONGHE-GUIDE SECTION ; PALEOCLIMATIC EVOLUTION ; TIBETAN PLATEAU ; ASIAN MONSOON ; QUARTZ GRAINS ; POTENTIAL USE ; RECORDS ; DEPOSITS ; BASIN
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394098
推荐引用方式 GB/T 7714	Niu, Yanning,Fan, Yuxin,Qiao, Yansong,et al. Chronostratigraphy of a loess-paleosol sequence in the western Chinese Loess Plateau based on ESR dating and magnetostratigraphy[J],2022,637:1-11.
APA	Niu, Yanning.,Fan, Yuxin.,Qiao, Yansong.,Lu, Tongyan.,Li, Chaozhu.,...&Tan, Yuanlong.(2022).Chronostratigraphy of a loess-paleosol sequence in the western Chinese Loess Plateau based on ESR dating and magnetostratigraphy.QUATERNARY INTERNATIONAL,637,1-11.
MLA	Niu, Yanning,et al."Chronostratigraphy of a loess-paleosol sequence in the western Chinese Loess Plateau based on ESR dating and magnetostratigraphy".QUATERNARY INTERNATIONAL 637(2022):1-11.