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Mesozoic tectonic evolution of eastern China: Insights from the Changshan Islands, NE China

文献类型：期刊论文

作者Ren, Zhiheng; Lin, Wei1
刊名TECTONOPHYSICS
出版日期2019-07-20
卷号763页码:46-60
关键词Structural analysis Polyphase deformation Mesozoic tectonics Changshan islands South Liaodong Peninsula
ISSN号0040-1951
DOI10.1016/j.tecto.2019.04.025
英文摘要The Changshan islands are scattered among the Yellow Sea east of the Liaodong Peninsula, west of North Korea and north of the Sulu Orogenic Belt. They consist of three lithotectonic units: i) Archean gneiss, ii) Paleoproterozoic marble and micaschists, and iii) Neoproterozoic weakly metamorphic sedimentary rocks. Three stages of deformation (D-1-D-3) documented in this study indicate that Changshan islands are a key region to decipher the Mesozoic tectonic evolution of eastern China. The earliest deformation D-1 corresponds to a ductile deformation with NE-SW trending mineral and stretching lineations and top-to-the-NE sense of shear. The deformation D-2, observed in the micaschists and sedimentary rocks, is characterized by the SW-verging folds with NE-dipping axial planar cleavage S-2 and SW-directed thrusting. D-2 could be considered as the back-folding and back-thrusting of the D-1. D-3 is expressed by the NE-SW trending low-angle brittle and ductile detachment faults representing a NW-SE extensional event. To the east of Guanglu and Guapi islands, two samples from a granite pluton that only record D-3 fabrics yield SIMS zircon ages of 165.4 +/- 1.6 Ma and 164.7 +/- 1.5 Ma, which indicate that D-1 and D-2 occurred earlier than 165 Ma, while D-3 is younger than this age. Similar geometric and kinematic features with those of the South Liaodong Peninsula suggest that D-1 and D-2 occurred in the Middle-Late Triassic as the structural response of overriding plate to the continental subduction of the South China Block (SCB) beneath the North China Craton (NCC), while the D-3 occurred in the Early Cretaceous during the development of the Liaonan Metamorphic Core Complex (MCC). The ductile shear zone and brittle normal faults of the Changshan islands represent the early extensional structures of the Liaonan MCC. They may develop further southeastward and controlled the early development of the North Yellow Sea Basin.
WOS关键词METAMORPHIC CORE COMPLEX ; FOLD-THRUST BELT ; ZIRCON U-PB ; NORTH-CHINA ; LIAODONG PENINSULA ; ULTRAHIGH-PRESSURE ; SOUTH CHINA ; CONTINENTAL EXTENSION ; EXHUMATION TECTONICS ; MECHANICAL MODEL
资助项目Chinese Ministry of Science and Technology[2016YFC0600401] ; Chinese Ministry of Science and Technology[2016YFC0600102] ; National Natural Science Foundation of China[91855212] ; National Natural Science Foundation of China[91755205] ; National Natural Science Foundation of China[41472193]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000472243000004
出版者ELSEVIER SCIENCE BV
资助机构Chinese Ministry of Science and Technology ; Chinese Ministry of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Ministry of Science and Technology ; Chinese Ministry of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Ministry of Science and Technology ; Chinese Ministry of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Ministry of Science and Technology ; Chinese Ministry of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/92510]  
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Lin, Wei
作者单位1.Chinese Acad Sci, Inst Earth Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Ren, Zhiheng,Lin, Wei. Mesozoic tectonic evolution of eastern China: Insights from the Changshan Islands, NE China[J]. TECTONOPHYSICS,2019,763:46-60.
APA Ren, Zhiheng,&Lin, Wei.(2019).Mesozoic tectonic evolution of eastern China: Insights from the Changshan Islands, NE China.TECTONOPHYSICS,763,46-60.
MLA Ren, Zhiheng,et al."Mesozoic tectonic evolution of eastern China: Insights from the Changshan Islands, NE China".TECTONOPHYSICS 763(2019):46-60.

入库方式： OAI收割

来源：地质与地球物理研究所

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