| 大青山伸展拆离断层运动学涡度研究及构造指示意义 |
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| 引用本文： | 刘江,张进江,郭磊,戚国伟.大青山伸展拆离断层运动学涡度研究及构造指示意义[J].大地构造与成矿学,2011,35(1):1-11. |
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| 作者姓名： | 刘江 张进江 郭磊 戚国伟 |
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| 作者单位： | 刘江,张进江,戚国伟,LIU Jiang,ZHANG Jinjiang,QI Guowei(北京大学,地球与空间科学学院,造山带与地壳演化教育部重点实验室,北京,100871);郭磊,GUO Lei(中国地质科学院,地质研究所,北京,100037) |
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| 摘 要： | 在华北北缘的大青山伸展拆离断裂带叠加在中生代逆冲断层之上,其韧性剪切带在变质核杂岩南北两侧出露,运动学指向为上盘向南东向拆离.运动学涡度分析表明,大青山拆离断层剪切带早期(较高温)简单剪切分量不断增加直至简单剪切;拆离断层总体平均涡度Wm简单剪切分量沿拆离断层上盘运动方向增大,与韧性剪切带先垂向颈缩、后水平伸展的被动式...
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| 关 键 词： | 运动学涡度 伸展断层 构造意义 |
Kinematic Vorticity of the Daqingshan Detachment Fault and its Structural Implications |
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| LIU Jiang,ZHANG Jinjiang,GUO Lei,QI Guowei.Kinematic Vorticity of the Daqingshan Detachment Fault and its Structural Implications[J].Geotectonica et Metallogenia,2011,35(1):1-11. |
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| Authors: | LIU Jiang ZHANG Jinjiang GUO Lei QI Guowei |
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| Institution: | LIU Jiang1,ZHANG Jinjiang1,GUO Lei2 and QI Guowei1(1.Key Laboratory of Orogenic Belts and Crustal Evolution under Ministry of Education & School of Earth and Space Sciences,Peking University,Beijing 100871,China,2.Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China) |
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| Abstract: | Kinematic vorticity (Wk) is defined to quantify the relative contributions of pure shear component and simple shear component in ductile deformation zone,and is a very important constraint on the evolution of a ductile shear zone. Ductile shear zone of the Daqingshan detachment fault which superimposed on the Mesozoic thrusts is exposed on both southern and northern limbs of Hohhot metamorphic core complex,with a top to south-east detachment direction. Kinematic vorticity analysis with different methods sho... |
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| Keywords: | kinematic vorticity detachment fault structural significance |
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