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Collision-Induced Late Permian–Early Triassic Transpressional Deformation in the Yanshan Tectonic Belt, North China
Zhihong Wang and Jialiang Wan
The Journal of Geology
Vol. 122, No. 6 (November 2014), pp. 705-716
Published by: The University of Chicago Press
Stable URL: http://www.jstor.org/stable/10.1086/677843
Page Count: 12
You can always find the topics here!Topics: Fault zones, Geologic deformation, Rocks, Tectonics, Biotite, Kinematics, Minerals, Quartz, Geology, Plateaus
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AbstractCrustal deformation occurred widely in the Yanshan tectonic belt, north of the North China Craton, and its time and mechanism remain as open problems. On the basis of new structural data and 40Ar-39Ar dating on hornblende and biotite from the rocks in the belt, a dynamic link between the deformation and plate interaction is established. Abundant structures in the Fengning-Longhua fault zone indicate that it is a transpressional fault zone including both strike-slip (dextral) and compressional (south-directed) components and is kinematically conformable to the Huade-Chifeng fault zone in the Neimeng Uplift and to the Pingquan-Gubeikou and Miyun-Xifengkou-Jinxi transpressional fault zones in the Yanshan fold and thrust belt, suggesting coupled deformation in the overall Yanshan tectonic belt during the Late Permian–Early Triassic. This phase of deformation coincides well in age and in kinematics with the Late Permian collision between the North China Block and Mongolia arc terranes, implying that the most intense Late Permian–Early Triassic transpressional deformation in the Yanshan belt was developed as a result of the convergence of the Central Asian Orogenic Belt.
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