Three evolutionary stages of the collision orogenic deformation in the Middle Yangtze Region

A discussion of collision orogenic deformation has been made for the Middle Yangtze Region. Based on its deformation assemblage orders, three developing stages are classified successively as compression thrust uplift, strike-slip escape rheology and tension extension inversion. The collision orogene...

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Bibliographic Details
Published in:Science China. Earth sciences 2001-11, Vol.44 (11), p.990-1001
Main Authors: Sun, Yan, Shu, Liangshu, Zhu, Wenbin, Guo, Jichun, Chen, Xiangyun, Faure, M., Charvet, J., Lin, W.
Format: Article
Language:English
Subjects:
Chronology
Compression
Deformation
Fractures
Orogeny
Plate tectonics
Rheological properties
Rheology
Tectonics
Uplift
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Summary:A discussion of collision orogenic deformation has been made for the Middle Yangtze Region. Based on its deformation assemblage orders, three developing stages are classified successively as compression thrust uplift, strike-slip escape rheology and tension extension inversion. The collision orogenesis of the studied region has been divided into three developing periods of initial, chief and late orogeny. Based on the data from Wugong Mts., Jiuling Mts. and Xuefeng Mts., for each stage, its variation of stress and strain axes, the conversion of joint fractures and their relative tectonic evolution are described, models are plotted and corresponding explanations are made for the rock chronology dating value in the same tectonic period.
ISSN:1006-9313
1674-7313
1862-2801
1869-1897
DOI:10.1007/BF02875392