Crustal deformation and tectonic levels of Nujiang Gorge since the Miocene

doi:10.1007/s11430-017-9116-x

	Crustal deformation and tectonic levels of Nujiang Gorge since the Miocene
	Liu ZhiCheng 1,2; Ji JianQing 2; Sa Xiao 2; Chen YaPeng 3; Zhong DaLai 4
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/132A11/82424]
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.