IGGCAS OpenIR  > 新生代地质与环境院重点实验室
Cenozoic tectonic rotations in different parts of the NE Pamir: implications for the evolution of the arcuate orogen
Zhang, Zhiliang1; Sun, Jimin1,2,3
2020-09-01
Source PublicationINTERNATIONAL JOURNAL OF EARTH SCIENCES
ISSN1437-3254
Volume109Issue:6Pages:1921-1939
AbstractThe Pamir salient, defining the NW end of the Himalayan-Tibetan orogen, is a prominent curved orogen as a response to the Indian-Eurasian collision. Its evolution history is essential for understanding intracontinental tectonic processes in the context of continental collision. In this study, we carry out systematic paleomagnetic studies on four sections in different parts of the NE Pamir to unravel the tectonic evolution of the curved orogen. Our new results from the Oytag section suggest that the clockwise (CW) rotations of the eastern Pamir salient mainly occurred in the Oligocene (~ 32-26 Ma) as a response to the northward indentation of the Pamir salient and was dominated by large-scale dextral strike-slip faults since then. Additionally, the final collision between Pamir and SW Tian Shan in the latest Miocene reactivated the dextral Talas-Ferghana Fault (TFF), thus be responsible for the counter-clockwise (CCW) rotations at Ulugqat. However, the limited tectonic rotations of the Keliyang and Sanju sections can be explained by the dominant thrust faulting in the foreland of the West Kunlun Mountains. Combined with the existing paleomagnetic data around the Pamir salient, our results support a four-stage evolution: (1) a roughly linear orogen before the early Eocene; (2) symmetric rotations on both sides until the latest Oligocene followed by (3) asymmetric geometries with continued radial thrusting on the western flank and large-scale strike-slip fault on the eastern flank; and (4) final collision between the Pamir salient and SW Tian Shan in the late Miocene.
KeywordPaleomagnetism Tectonic rotation Pamir Curved orogen Tarim Basin
DOI10.1007/s00531-020-01880-2
WOS KeywordVERTICAL-AXIS ROTATION ; CHUAN-DIAN FRAGMENT ; WESTERN TARIM BASIN ; KYRGYZ TIEN-SHAN ; TIAN-SHAN ; TIBETAN PLATEAU ; THRUST BELT ; RED-BEDS ; PALEOMAGNETIC CONSTRAINTS ; KINEMATIC EVOLUTION
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000558011500003
PublisherSPRINGER
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Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/97613
Collection新生代地质与环境院重点实验室
Corresponding AuthorZhang, Zhiliang; Sun, Jimin
Affiliation1.Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Zhiliang,Sun, Jimin. Cenozoic tectonic rotations in different parts of the NE Pamir: implications for the evolution of the arcuate orogen[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2020,109(6):1921-1939.
APA Zhang, Zhiliang,&Sun, Jimin.(2020).Cenozoic tectonic rotations in different parts of the NE Pamir: implications for the evolution of the arcuate orogen.INTERNATIONAL JOURNAL OF EARTH SCIENCES,109(6),1921-1939.
MLA Zhang, Zhiliang,et al."Cenozoic tectonic rotations in different parts of the NE Pamir: implications for the evolution of the arcuate orogen".INTERNATIONAL JOURNAL OF EARTH SCIENCES 109.6(2020):1921-1939.
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