Tectonic evolution and implication of Ningshan Fault in the central part of Qinling Orogen

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	Tectonic evolution and implication of Ningshan Fault in the central part of Qinling Orogen
	Hu, JM (Hu JianMin); Meng, QR (Meng QingRen); Chen, H (Chen Hong); Wu, GL (Wu GuoLi); Qu, HJ (Qu HongJie); Gao, W (Gao Wei); Chen, W (Chen Wen)
刊名	ACTA PETROLOGICA SINICA
	2011
卷号	27 期号:3 页码:657-671
关键词	Qinling Orogen Ningshan Fault Daba Mountain Yangtze block
ISSN号	1000-0569
英文摘要	Ningshan Fault is a large-scale WE-trending fault in Qinling Orogen. This research indicates that the left-lateral shear zone exhibit abundant ductile shear fabrics of earlier stage which were superimposed by a late brittle deformation. Ar-40-Ar-39 ages on syn-deformational and syn-metamorphic minerals from the Ningshan Fault confirmed that the early ductile deformation occurred during 169 similar to 162Ma and was formed in the intracontinental deformation in the period of post-collision of Qinling Orogen. Existing of this left-lateral shear zone indicates that the tectonic belt of South Qinling Orogen may be subdivided into two different unites before Middle-Late Jurassic. Some metamorphic rocks of old basement crops out on the NW side of the Ningshan Fault and were intruded by many Mesozoic granitic plutons; on the SE side of the fault, however, dominant Meso- and Neo-Proterozoic low-grade metamorphic volcanic rocks and metasediment was intruded by basic and alkalic dykes of Neo-Proterozoic to Early Paleozoic. It has been confirmed that large-scale left-lateral shear movement occurred in the western and northern margins of Yangtze block in the Late-Middle Jurassic to the Early Cenozoic, which may be connected with the clock-wised rotation of the block in that time.
学科主题	构造地质学
WOS关键词	CENTRAL CHINA ; SOUTH CHINA ; VOLCANIC-ROCKS ; DISCOVERY ; BELT ; ZONE ; SIGNIFICANCES ; GEOCHEMISTRY ; COLLISION ; ROTATION
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000289926600006
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39449]
专题	中国地质调查局
作者单位	Chinese Acad Geol Sci, Inst Geol, Ar Ar Isotope Lab, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Hu, JM ,Meng, QR ,Chen, H ,et al. Tectonic evolution and implication of Ningshan Fault in the central part of Qinling Orogen[J]. ACTA PETROLOGICA SINICA,2011,27(3):657-671.
APA	Hu, JM .,Meng, QR .,Chen, H .,Wu, GL .,Qu, HJ .,...&Chen, W .(2011).Tectonic evolution and implication of Ningshan Fault in the central part of Qinling Orogen.ACTA PETROLOGICA SINICA,27(3),657-671.
MLA	Hu, JM ,et al."Tectonic evolution and implication of Ningshan Fault in the central part of Qinling Orogen".ACTA PETROLOGICA SINICA 27.3(2011):657-671.