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Studying in Middle-Tectonic Level and Rock Deformation Characteristic in Longshoushan Area
详细信息   
摘要


     The kinematic and dynamic characteristics of Longshoushan ductile shear zone in the early period of Caledonian orogeny was mainly the bottom-up tensile stress. In the middle period, it was largely dextral pure shearing action which was NW-SE trend. In the last period, it was the positive pressure of NE-SW trend accompanied by local press twist action. According to the distribution of the ductile shear zone in the strata, namely only in Jixianian System and Sinian System, the authors conclude that the ductile shear zone should be formed after Sinian Period. Combined with the age of Jinchuan ultrabasic complex, we can conclude that the ductile shear zone has no contribution to Jinchuan deposit, but maybe it can help the ultrabasic complex move to shallow zone.

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