Quaternary structural partitioning within the rigid Tarim plate inferred from magnetostratigraphy and sedimentation rate in the eastern Tarim Basin in China

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	Quaternary structural partitioning within the rigid Tarim plate inferred from magnetostratigraphy and sedimentation rate in the eastern Tarim Basin in China
	Chang, Hong 1; An, Zhisheng 1; Liu, Weiguo 1; Ao, Hong 1; Qiang, Xiaoke 1; Song, Yougui 1; Lai, Zhongping2
	2014-05-01
发表期刊	QUATERNARY RESEARCH
卷号	81 期号:3 页码:424-432
关键词	Tarim Basin Sub-basin Structural Units Magnetostratigraphy Pleistocene Sedimentation Rate Magnetic Susceptibility Climate Change Tectonic Uplift
摘要	It has been proposed that within the Tarim Basin tectonic activity has been limited since Triassic time. However, on the basis of magnetostratigraphy from the eastern Tarim Basin, which defines the chronology of sedimentation and structural evolution of the basin, we show that the basin interior has been uplifted and partitioned during Quaternary. The magnetostratigraphy was constructed from 2228 samples that yielded acceptable inclination values. Characteristic remnant magnetization (ChRM) with both normal (N1-N11) and reversed (R1-R11) polarity was isolated by thermal demagnetization. The data correlate best with polarity chrons C3r to C1n, which range from 5.39 Ma to recent on the geological time scale 2004 (GTS2004). An abrupt decrease in the sedimentation rate is observed at 1.77 Ma in the Ls1 core. This change does not overlap with known Pleistocene climate-change events. We attribute this sedimentation rate decrease to a structurally controlled local decrease in accommodation space where basin basement uplifts occur. This period of sedimentary environmental change reveals that structural partitioning in the basement of the Tarim Basin occurred since similar to 1.77 Ma, and we speculate that tilting of the Southeast Uplift (a sub-basin unit) within the Tarim Basin began in early Pleistocene time. (C) 2013 University of Washington. Published by Elsevier Inc. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5691
专题	青海盐湖研究所知识仓储盐湖地质与环境实验室
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Resources & Chem Lab, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chang, Hong,An, Zhisheng,Liu, Weiguo,et al. Quaternary structural partitioning within the rigid Tarim plate inferred from magnetostratigraphy and sedimentation rate in the eastern Tarim Basin in China[J]. QUATERNARY RESEARCH,2014,81(3):424-432.
APA	Chang, Hong.,An, Zhisheng.,Liu, Weiguo.,Ao, Hong.,Qiang, Xiaoke.,...&Lai, Zhongping.(2014).Quaternary structural partitioning within the rigid Tarim plate inferred from magnetostratigraphy and sedimentation rate in the eastern Tarim Basin in China.QUATERNARY RESEARCH,81(3),424-432.
MLA	Chang, Hong,et al."Quaternary structural partitioning within the rigid Tarim plate inferred from magnetostratigraphy and sedimentation rate in the eastern Tarim Basin in China".QUATERNARY RESEARCH 81.3(2014):424-432.