Crustal deformation and tectonic levels of Nujiang Gorge since the Miocene | |
Liu ZhiCheng1,2; Ji JianQing2; Sa Xiao2; Chen YaPeng3; Zhong DaLai4 | |
刊名 | SCIENCE CHINA-EARTH SCIENCES |
2018 | |
卷号 | 61期号:1页码:93-108 |
关键词 | Tectonic Level Nujiang Gorge Flow Deformation Ductile Shear Deformation Thermal Evolution |
ISSN号 | 1674-7313 |
DOI | 10.1007/s11430-017-9116-x |
文献子类 | Article |
英文摘要 | Crustal deformation shows different patterns at different depths due to changes in the physical properties of rock. Tectonic levels can be defined based on the geometry and deformation mechanisms of crustal deformation patterns. Nujiang Gorge, with a high riverbed drop, great erosion depth, and strong deformation, has rock exposures at different tectonic levels and thus provides an ideal lab for deformation study. This paper takes the Nujiang Gorge from Chawalong to Fugong as the object to identify structural deformation patterns at different depths through field study and deformation analysis. At depth, the primary form of deformation is flow deformation, as shown on the outcrops at Maji. Ductile shear deformation can be found in many outcrops within the study region, e.g., the Gaoligong dextral shear zone and Puladi-Songta sinistral shear zone that lie to the south and north of Maji, respectively. Further to the north of Puladi, the dominated deformation pattern is similar fold and dense sub-vertical foliation. In addition, brittle faults, as evidence of shallow deformation, can be seen overprinting on the deeper deformation features all over the region. Based on those observations, this paper identifies four tectonic levels from depth to the surface: flow deformation, ductile shear deformation, similar fold, and brittle fault deformation, all of which result from the NEE-SWW compressive stress field. Further evidence from studies on the region's thermal evolution and regional tectonics suggests that the development of different tectonic levels is closely linked to the discrepant uplift or denudation since the Miocene (similar to 21 Ma). |
WOS关键词 | RIVER SHEAR ZONE ; EASTERN HIMALAYAN SYNTAXIS ; SOUTHEASTERN TIBETAN PLATEAU ; FINITE STRAIN CALCULATIONS ; AILAO-SHAN ; WESTERN YUNNAN ; SE ASIA ; CONTINENTAL DEFORMATION ; DIANCANG SHAN ; INDO-CHINA |
WOS研究方向 | Geology |
语种 | 英语 |
出版者 | SCIENCE PRESS |
WOS记录号 | WOS:000423044900009 |
资助机构 | Project of the China Geological Survey(12120113013700) ; Project of the China Geological Survey(12120113013700) ; Director Fund project of China Earthquake Disaster Prevention Center(201604) ; Director Fund project of China Earthquake Disaster Prevention Center(201604) ; Project of the China Geological Survey(12120113013700) ; Project of the China Geological Survey(12120113013700) ; Director Fund project of China Earthquake Disaster Prevention Center(201604) ; Director Fund project of China Earthquake Disaster Prevention Center(201604) ; Project of the China Geological Survey(12120113013700) ; Project of the China Geological Survey(12120113013700) ; Director Fund project of China Earthquake Disaster Prevention Center(201604) ; Director Fund project of China Earthquake Disaster Prevention Center(201604) ; Project of the China Geological Survey(12120113013700) ; Project of the China Geological Survey(12120113013700) ; Director Fund project of China Earthquake Disaster Prevention Center(201604) ; Director Fund project of China Earthquake Disaster Prevention Center(201604) |
内容类型 | 期刊论文 |
源URL | [http://ir.iggcas.ac.cn/handle/132A11/82425] |
专题 | 中国科学院地质与地球物理研究所 |
通讯作者 | Ji JianQing |
作者单位 | 1.China Earthquake Disaster Prevent Ctr, Beijing 100029, Peoples R China 2.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China 3.Power China Beijing Engn Corp Ltd, Beijing 100024, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Liu ZhiCheng,Ji JianQing,Sa Xiao,et al. Crustal deformation and tectonic levels of Nujiang Gorge since the Miocene[J]. SCIENCE CHINA-EARTH SCIENCES,2018,61(1):93-108. |
APA | Liu ZhiCheng,Ji JianQing,Sa Xiao,Chen YaPeng,&Zhong DaLai.(2018).Crustal deformation and tectonic levels of Nujiang Gorge since the Miocene.SCIENCE CHINA-EARTH SCIENCES,61(1),93-108. |
MLA | Liu ZhiCheng,et al."Crustal deformation and tectonic levels of Nujiang Gorge since the Miocene".SCIENCE CHINA-EARTH SCIENCES 61.1(2018):93-108. |
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