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Cretaceous exhumation of the Triassic intracontinental Xuefengshan Belt: Delayed unroofing of an orogenic plateau across the South China Block?

文献类型：期刊论文

作者Chu, Yang2,3,4,5; Lin, Wei2,3,4; Faure, Michel1; Allen, Mark B.5; Feng, Zhentian2,4
刊名TECTONOPHYSICS
出版日期2020-10-20
卷号793页码:17
关键词Cretaceous extension Delayed exhumation Thermochronology Mesozoic plateau Xuefengshan South China
ISSN号0040-1951
DOI10.1016/j.tecto.2020.228592
英文摘要A large plateau can be produced by crustal thickening in convergent zones such as continental collision belts and Andean-type subduction zones, but the life cycles of such plateaux are not well-understood. In particular, it is not clear how long they persist after construction, before other tectonic processes or erosion reduce crustal thickness and elevation to near-normal levels. Triassic subduction- and collision-tectonics produced intense deformation, magmatism and metamorphism across the entire South China Block. This large-scale crustal shortening created a broad orogenic belt, uplifted most parts of the South China Block, and probably initiated the growth of an orogenic plateau. Our study presents low-temperature thermochronology data from the Xuefengshan Belt in the interior of the South China Block. There was along-strike variation in exhumation. The north orogenic core was subjected to Triassic (similar to 245-210 Ma), and Late Cretaceous (similar to 100-80 Ma) exhumation, whereas the cooling path of the south orogenic core reflects a two stage Cretaceous evolution. The variable exhumation pattern reflects non-uniform tectonics in different regions, but both regions were subject to Late Cretaceous extension. We tentatively reconstruct the original plateau paleo-elevation to be similar to 1.5 km above sea level, based on the amount of exhumation (similar to 10 km) and the present crustal thickness (similar to 35 km). The T-t trajectories of the Xuefengshan Belt and other Triassic belts highlight the significance of Cretaceous extension and exhumation in shaping the tectonic configuration of the South China Block. Large-scale extension was probably triggered by rollback of the Paleo-Pacific subduction
WOS关键词U-PB AGE ; PRESSURE CONTINENTAL-CRUST ; EAST CENTRAL CHINA ; TECTONIC EVOLUTION ; NORTH CHINA ; AR-40/AR-39 GEOCHRONOLOGY ; YANGTZE BLOCK ; EXTENSIONAL TECTONICS ; TECTONOTHERMAL EVENTS ; ZIRCON GEOCHRONOLOGY
资助项目Ministry of Science and Technology[2016YFC0600401] ; Ministry of Science and Technology[2016YFC0600102] ; National Natural Science Foundation of China[91855212] ; National Natural Science Foundation of China[41872208] ; National Natural Science Foundation of China[41302161] ; China Scholarship Council[201804910283] ; Youth Innovation Promotion Association ; Institute of Geology and Geophysics, Chinese Academy of Sciences
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000582089200003
出版者ELSEVIER
资助机构Ministry of Science and Technology ; Ministry of Science and Technology ; Ministry of Science and Technology ; Ministry of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Ministry of Science and Technology ; Ministry of Science and Technology ; Ministry of Science and Technology ; Ministry of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Ministry of Science and Technology ; Ministry of Science and Technology ; Ministry of Science and Technology ; Ministry of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Ministry of Science and Technology ; Ministry of Science and Technology ; Ministry of Science and Technology ; Ministry of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/98315]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Chu, Yang
作者单位1.Univ Orleans, Inst Sci Terre Orleans, UMR 7327, F-45071 Orleans, France
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Inst Earth Sci, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
5.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England
推荐引用方式
GB/T 7714		 Chu, Yang,Lin, Wei,Faure, Michel,et al. Cretaceous exhumation of the Triassic intracontinental Xuefengshan Belt: Delayed unroofing of an orogenic plateau across the South China Block?[J]. TECTONOPHYSICS,2020,793:17.
APA Chu, Yang,Lin, Wei,Faure, Michel,Allen, Mark B.,&Feng, Zhentian.(2020).Cretaceous exhumation of the Triassic intracontinental Xuefengshan Belt: Delayed unroofing of an orogenic plateau across the South China Block?.TECTONOPHYSICS,793,17.
MLA Chu, Yang,et al."Cretaceous exhumation of the Triassic intracontinental Xuefengshan Belt: Delayed unroofing of an orogenic plateau across the South China Block?".TECTONOPHYSICS 793(2020):17.

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来源：地质与地球物理研究所

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