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Magnetostratigraphy of the Suerkuli Basin indicates Pliocene (3.2 Ma) activityof the middle Altyn Tagh Fault, northern Tibetan Plateau
Chang, H (Chang, Hong)[1]; Ao, H (Ao, Hong)[1]; An, ZS (An, Zhisheng)[1]; Fang, XM (Fang, Xiaomin)[2]; Song, YG (Song, Yougui)[1]; Qiang, XK (Qiang, Xiaoke)[1]
2012-02-28
Source PublicationJournal of Asian Earth Sciences
Volume44Pages:169-175
Subtype期刊论文
Abstract

The left-lateral strike-slip Altyn Tagh Fault (ATF) forming the northern boundary of the Tibetan Plateau accommodates parts of the overall convergence between the colliding Indian and Eurasian plates. Precise dating of the ATF activity is essential for understanding possible mechanisms of Tibetan Plateau deformation and uplift. Here we report a magnetostratigraphic study of the Suerkuli Basin deposits recording depositional changes during the ATF activity. Field investigations reveal a remarkable and widespread change in depositional environment in the Suerkuli Basin, i.e. a transformation from low-energy lacustrine deposits (grayish-green mud-siltstone and brown mud-siltstone) into high-energy alluviul fan deposits (poorly sorted gray pebble and cobble conglomerates). Detailed magnetostratigraphy of the 390-m-thick Daban section, at the southeastern margin of the Suerkuli Basin (38 43.090N, 90 58.840E), shows that this change in depositional facies occurred at 3.2 Ma, accompanied by a remarkable increase in sediment accumulation rate. We attribute this depositional change to the Piocene tectonic activity of the middle ATF although the contribution of the Pliocene global climate deterioration cannot be excluded.

KeywordMagnetostratigraphy Altyn Tagh Fault Tectonic Uplift Suerkuli Basin Pliocene
DOI10.1016/j.jseaes.2011.10.013
Indexed BySCIE
Language英语
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10087
Collection古环境研究室
Corresponding AuthorChang, H (Chang, Hong)[1]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xian 710075, China;
2.Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China
Recommended Citation
GB/T 7714
Chang, H ,Ao, H ,An, ZS ,et al. Magnetostratigraphy of the Suerkuli Basin indicates Pliocene (3.2 Ma) activityof the middle Altyn Tagh Fault, northern Tibetan Plateau[J]. Journal of Asian Earth Sciences,2012,44:169-175.
APA Chang, H ,Ao, H ,An, ZS ,Fang, XM ,Song, YG ,&Qiang, XK .(2012).Magnetostratigraphy of the Suerkuli Basin indicates Pliocene (3.2 Ma) activityof the middle Altyn Tagh Fault, northern Tibetan Plateau.Journal of Asian Earth Sciences,44,169-175.
MLA Chang, H ,et al."Magnetostratigraphy of the Suerkuli Basin indicates Pliocene (3.2 Ma) activityof the middle Altyn Tagh Fault, northern Tibetan Plateau".Journal of Asian Earth Sciences 44(2012):169-175.
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