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	The Role of the Curved Southern Asian Margin Between the Tarim and Tajik Cratons During the Evolution of the Pamir, Insights From Sandbox Modeling
通讯作者	Jia, Dong([email protected]) ; Chen, Hanlin([email protected])
	Yang, Shuang1; Jia, Dong1; Chen, Hanlin2; Sun, Chuang3; Yin, Hongwei1; Fan, Xiaogen1; Zhang, Yong4; Lin, Xiubin2; Chen, Zhuxin5; Shen, Li6
	2024-04-01
发表期刊	TECTONICS
ISSN	0278-7407
卷号	43期号:4页码:20
摘要	Enhanced knowledge of the Pamir salient formation can contribute to comprehending the tectonic evolution of Himalaya-Tibetan orogen. However, whether the Pamir salient formed along a linear or a curved southern Asian margin between the Tarim and Tajik cratons remains controversial. Likewise, the role of the two craton blocks during the evolution of the Pamir salient is unclear. Here we present three sandbox experiments exploring the effect of the geometry of the southern Asian margin, as well as the presence of Tarim and Tajik cratons. The results show that the highly curved shape of the Pamir salient, transpressional faults in its wings and strike-slip faults within its interior only form along a curved southern Asian margin. A westward-deflecting arcuate thrust wedge formed along the asymmetric curved southern Asian margin. Together with the Tarim craton and the Tajik craton, this wedge facilitated the westward transfer of materials in the Pamir, and resulted in the westward deflection of the velocity field in Pamir and the formation of the Tajik fold-thrust belt. The oblique slip of arcuate thrust wedge along the western edge of the Tarim craton generated the Kongur extensional system. Moreover, the Tarim and Tajik cratons concentrated deformation mainly along the non-cratonic continental margin and promoted the formation of transpressional faults surrounding the Pamir and the strike-slip faults within the Pamir. The Pamir plateau is situated in the western part of the Tibetan plateau, and enhanced knowledge of how the Pamir plateau was formed contributes to comprehending the evolution of the Tibetan plateau. However, there are two distinct viewpoints about its formation: the Pamir plateau may have formed either along a linear or a curved Asian southern margin between the Tarim and Tajik cratons. Here, we used sandbox models to explore this issue. Our results suggest that the Pamir plateau formed along a curved southern Asian margin. The western margin of the curved southern Asian margin strikes north-south, the northern margin strikes east-west, and the eastern margin strikes northwest. A westward-deflecting arcuate thrust wedge formed along this curved southern Asian margin. The northern segments of the western edge of the Tarim craton and the eastern edge of the Tajik craton strike both northwest. They together facilitated the westward transfer of materials in the Pamir, and resulted in the westward deflection of the velocity field in Pamir and the formation of the Tajik fold-thrust belt. The arcuate thrust wedge slides obliquely along the western edge of the Tarim craton, resulting in the formation of Kongur extensional system. The orogen geometry and structural style of Pamir salient formed along curved southern Asian margin between the Tarim and Tajik cratons The curved southern Asian margin and two cratons jointly resulted in a westward deflection of the velocity field in the Pamir The arcuate thrust wedge slides obliquely along the western edge of Tarim craton, resulting in the formation of Kongur extensional system
关键词	Pamir salient curved orogen sandbox modeling curved southern Asian margin velocity field Tarim and Tajik cratons
DOI	10.1029/2023TC008054
收录类别	SCI
语种	英语
关键词[WOS]	THRUST BELT ; PLATEAUCRUSTAL STACKING ; CONTINENTAL SUBDUCTION ; EXTENSIONAL COLLAPSE ; LATERAL EXTRUSION ; EASTERN PAMIR ; DEEP CRUST ; TIEN-SHAN ; DEFORMATION ; BASIN
资助项目	National Natural Science Foundation of China[41927802] ; National Natural Science Foundation of China[U22B6002] ; National Natural Science Foundation of China[42372264]
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:001205315800001
项目资助者	National Natural Science Foundation of China
出版者	AMER GEOPHYSICAL UNION
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/43658
专题	中国科学院南京地质古生物研究所
通讯作者	Jia, Dong; Chen, Hanlin
作者单位	1.Nanjing Univ, Sch Earth Sci & Engn, Nanjing, Peoples R China 2.Zhejiang Univ, Sch Earth Sci, Hangzhou, Peoples R China 3.Jilin Univ, Coll Earth Sci, Changchun, Peoples R China 4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing, Peoples R China 5.Res Inst Petr Explorat & Dev, Beijing, Peoples R China 6.Chongqing Univ Sci & Technol, Sch Civil Engn & Architecture, Chongqing, Peoples R China 7.Res Inst Petr Explorat & Dev Northwest, Key Lab Reservoir Characterizat, Lanzhou, Peoples R China 8.GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, Potsdam, Germany 9.PetroChina Dagang Oilfield Co, Tianjin, Peoples R China
推荐引用方式 GB/T 7714	Yang, Shuang,Jia, Dong,Chen, Hanlin,et al. The Role of the Curved Southern Asian Margin Between the Tarim and Tajik Cratons During the Evolution of the Pamir, Insights From Sandbox Modeling[J]. TECTONICS,2024,43(4):20.
APA	Yang, Shuang.,Jia, Dong.,Chen, Hanlin.,Sun, Chuang.,Yin, Hongwei.,...&Ge, Jiacheng.(2024).The Role of the Curved Southern Asian Margin Between the Tarim and Tajik Cratons During the Evolution of the Pamir, Insights From Sandbox Modeling.TECTONICS,43(4),20.
MLA	Yang, Shuang,et al."The Role of the Curved Southern Asian Margin Between the Tarim and Tajik Cratons During the Evolution of the Pamir, Insights From Sandbox Modeling".TECTONICS 43.4(2024):20.

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