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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, H (Chang, Hong)[ 1 ]; An, ZS (An, Zhisheng)[ 1 ]; Liu, WG (Liu, Weiguo)[ 1 ]; Ao, H (Ao, Hong)[ 1 ]; Qiang, XK (Qiang, Xiaoke)[ 1 ]; Song, YG (Song, Yougui)[ 1 ]; Lai, ZP (Lai, Zhongping)[ 2 ]
2014-05-15
发表期刊QUATERNARY RESEARCH
卷号81期号:3页码:424-432
文章类型期刊论文
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.

关键词Tarim Basin Sub-basin Structural Units Magnetostratigraphy Pleistocene Sedimentation Rate Magnetic Susceptibility Climate Change Tectonic Uplift
DOI10.1016/j.yqres.2013.10.018
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9684
专题古环境研究室
通讯作者Chang, H (Chang, Hong)[ 1 ]
作者单位1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China;
2.Resources & Chemical Laboratory, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Lanzhou 730000, China
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GB/T 7714
Chang, H ,An, ZS ,Liu, WG ,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, H .,An, ZS .,Liu, WG .,Ao, H .,Qiang, XK .,...&Lai, ZP .(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, H ,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.
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