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Syn-tectonic emplacement duringsinistral transpression: The Late Triassic Gaoqiao pluton in the SouthQinling Belt, central China
Tao, Wei1; Li, Yang1; Chen, Yingtao2; Lu, Rukui1; Ran, Yazhou1; Zhang, Pengpeng3; Zhang, Guowei1
2020-09-15
Source PublicationGEOLOGICAL JOURNAL
ISSN0072-1050
Pages17
AbstractInternal structures of the pluton may provide key information on magma emplacement mechanism and the relationship with regional tectonics. We present a case study on the Late Triassic Gaoqiao pluton from South Qinling Belt, which was emplaced under a syn-collisional setting. Multi-approaches including zircon U-Pb geochronology, field and microstructural observations, anisotropy of magnetic susceptibility analysis was conducted to reconstruct the growth process of the pluton and to investigate the internal structures. Zircon U-Pb geochronology reveals that the pluton is a composite intrusion which was constructed by two successive units with distinct ages (similar to 220 and similar to 210 Ma). Field observations show that the Gaoqiao pluton and its country rocks recorded abundant evidences of syn-plutonic deformations, indicating a syn-tectonic emplacement. Microstructural observations show that the internal fabrics were mainly acquired during the stage from magma flow to high-T solid-state deformation. The fabric distributions display 'onion-skin' patterns on the pluton scale, which are characterized by zoned foliations and lineations. Combined with the syn-collisional convergence setting, we propose a tectonic-controlled incremental growth model for the pluton, in which the pluton was successively constructed by the Fujiahe unit and the Hetaoping unit, and the emplacement process of the pluton was controlled by the regional deformation with sinistral transpressional kinematics. Furthermore, the internal fabric patterns of the Gaoqiao pluton were probably formed by tectonic-controlled helical magma flow, which appears to be common in fabric formation of many other plutons with similar features.
Keywordemplacement mechanism internal fabrics Qinling Orogen sinistral transpression zircon U-Pb dating
DOI10.1002/gj.3995
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Continental Dynamics ; State Key Laboratory of Continental Dynamics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Continental Dynamics ; State Key Laboratory of Continental Dynamics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Continental Dynamics ; State Key Laboratory of Continental Dynamics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Continental Dynamics ; State Key Laboratory of Continental Dynamics
WOS KeywordCLOSE SPATIAL RELATIONSHIP ; U-PB AGES ; QINLING OROGEN ; TECTONIC EVOLUTION ; GRANITE EMPLACEMENT ; FABRIC PATTERNS ; SHEAR ZONE ; CONSTRAINTS ; ZIRCON ; DEFORMATION
Language英语
Funding ProjectNational Natural Science Foundation of China[41802212] ; State Key Laboratory of Continental Dynamics[201212000174]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Continental Dynamics ; State Key Laboratory of Continental Dynamics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Continental Dynamics ; State Key Laboratory of Continental Dynamics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Continental Dynamics ; State Key Laboratory of Continental Dynamics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Continental Dynamics ; State Key Laboratory of Continental Dynamics
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000569267900001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/98243
Collection岩石圈演化国家重点实验室
Corresponding AuthorLi, Yang; Chen, Yingtao; Lu, Rukui
Affiliation1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
2.Xian Univ Sci & Technol, Coll Geol & Environm, Xian 710054, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Tao, Wei,Li, Yang,Chen, Yingtao,et al. Syn-tectonic emplacement duringsinistral transpression: The Late Triassic Gaoqiao pluton in the SouthQinling Belt, central China[J]. GEOLOGICAL JOURNAL,2020:17.
APA Tao, Wei.,Li, Yang.,Chen, Yingtao.,Lu, Rukui.,Ran, Yazhou.,...&Zhang, Guowei.(2020).Syn-tectonic emplacement duringsinistral transpression: The Late Triassic Gaoqiao pluton in the SouthQinling Belt, central China.GEOLOGICAL JOURNAL,17.
MLA Tao, Wei,et al."Syn-tectonic emplacement duringsinistral transpression: The Late Triassic Gaoqiao pluton in the SouthQinling Belt, central China".GEOLOGICAL JOURNAL (2020):17.
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