| 阿尔泰造山带的逆冲-走滑构造模式 |
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| 引用本文： | 张进江,郑亚东.阿尔泰造山带的逆冲-走滑构造模式[J].北京大学学报(自然科学版),1993(6). |
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| 作者姓名： | 张进江 郑亚东 |
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| 作者单位： | 北京大学地质学系
(张进江)，北京大学地质学系(郑亚东) |
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| 摘 要： | 阿尔泰造山带的运动学研究证明,该造山带是由逆冲和水平左旋剪切合成作用的产物。水平运动分量沿造山带自SE向NW增大,致使造山带的运动从SE段的逆冲为主逐渐过渡到NW段的左旋走滑为主。横向上水平分量自造山带腹地(NE)向前陆(SW)增大,造成腹地逆冲、前陆走滑、中间为过渡状态的特殊运动方式。推测形成这种运动方式的原因是造山带闭合时的斜向碰撞和造山带前缘准噶尔地块的透镜体边界效应。
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| 关 键 词： | 逆冲-走滑断层 剪切指向 斜向碰撞 透镜体效应 |
A Thrust-wrench Model for the Altay Orogenic Belt |
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| ZHANG Jinjiang,ZHENG Yadong.A Thrust-wrench Model for the Altay Orogenic Belt[J].Acta Scientiarum Naturalium Universitatis Pekinensis,1993(6). |
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| Authors: | ZHANG Jinjiang ZHENG Yadong |
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| Abstract: | The study on kinamatics of the Altay Orogenic Belt demonstrates that the orogenic belt was formed by thrusting and sinistrial shearing processes which acted simultaneously on the belt. The component of its strike-slip increased along the belt from SE to NW, while the component of its thrusting decreased. As a result, thrusting dominated in the SE section and sinistral wrenching became a title role in the NW section. Shearing component increased gradually from the hinterland (NE part) to the foreland (SW part) and resulted in a special style of movement) thrusting chiefly in the hinterland, wrenching dominantly near to the foreland and transition zone in between. This is attributed to the oblique collision during closing of the belt and the lens-effect of the Junggar massif in front of the belt. |
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| Keywords: | Strike-slip thrust Shear sense Oblique collision Lens-effect |
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