A Simple Shear Model for the Asymmetry in the Paleoproterozoic Fold Belt in Liaodong Peninsula |
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作者单位: | Dept. Earth Sci.,Jilin University,Changchun 130061 P.R. China |
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摘 要: | IntroductionThe Liaodong Paleoproterozioc fold belt is locat-ed at eastern China -- Korea craton, from Liaodongpeninsula through southern Jilin to north Kore$tothe east, to west Jiaodong peninsu1a to the west. Al-though many discussions, in the literature…
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A Simple Shear Model for the Asymmetry in the Paleoproterozoic Fold Belt in Liaodong Peninsula |
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Authors: | Cui Yingchun Liu Junlai Ma Lijie and Guan Huimei |
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Abstract: | Several aspects of the Liaodong Paleoproterozioc fold belt, including its components, tectonic, metamorphic and magmatic characteristics are discussed in the paper, with emphasis on the asymmetry of the fold belt and differences between the northern lineal-fold belt and the southern dome-fold belt. It is suggested that the fold belt is one magmatic passive margin, instead of a rift zone or the classical passive continental margin. The formation and evolution of the fold belt is dis- cussed with a simple shear model, which may best explain the co-existence of contemporaneous tectonic facies with different characteristics, the volcanic and plutonic activities, sedimentary formations and their geological attributes etc. |
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Keywords: | Liaodong differentiation magmatic passive continental margin simple shear model |
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