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首页> 外文期刊>Journal of Asian earth sciences >Paleostress regimes from brittle structures of the Karakoram-Kohistan Suture Zone and surrounding areas of NW Pakistan
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Paleostress regimes from brittle structures of the Karakoram-Kohistan Suture Zone and surrounding areas of NW Pakistan

机译：喀喇昆仑山-Kohistan缝合带及巴基斯坦西北部周边地区的脆性结构引起的古应力状态

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摘要

Paleostress orientations were calculated from fault populations at 24 sites along the SW-NE segment and five sites along the E-W, Yasin segment of the Karakoram-Kohistan Suture Zone in NW Pakistan. They demonstrate the importance of combined thrusting and strike-slip faulting. However, several paleostress tensor directions are distinguished: a dominant NW-SE compression and a minor E-W compression are compatible with the recent evolution of this part of the Hindu Kush. From the lack of both systematic overprinting-relationships and spatial trend (the two tensors were obtained at different locations) we conclude that in each location any of these two shortening directions can dominate. Heterogeneously distributed extension is found in some places and is likely due to local conditions. These paleostress tensors substantiate a transpressional regime due to far-field Himalayan compression and document the long-term background of the seismogenic deformation in this region.
机译：根据巴基斯坦西北部喀喇昆仑山-柯希斯坦缝合线带西南至东北段的24个站点和西南向Yasin段的五个站点的断层人口计算了古应力方向。他们证明了组合推力和走滑断层的重要性。但是，区分了几个古应力张量方向：主要的NW-SE压缩和次要的E-W压缩与兴都库什河这部分的近期演化兼容。由于缺乏系统的套印关系和空间趋势（两个张量在不同的位置获得），我们得出结论，在每个位置，这两个缩短方向中的任何一个都可以占主导地位。在某些地方发现了分布不均的扩展，可能是由于当地条件所致。这些古应力张量证实了由于远场喜马拉雅压缩所引起的超压状态，并记录了该区域地震成因的长期背景。

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  • 来源
    《Journal of Asian earth sciences》 |2010年第6期|p.307-335|共29页
  • 作者

    Stefan Heuberger; Bernard Celerier; Jean-Pierre Burg; Nawaz M. Chaudhry; H. Dawood; S. Hussain;

  • 作者单位

    Geologisches Institut, ETH and University Zurich, Sonneggstrasse 5, CH-8092 Zurich, Switzerland;

    Geosciences Montpellier, Universite de Montpellier II-CNRS, 34095 Montpellier Cedex 5, France;

    Geologisches Institut, ETH and University Zurich, Sonneggstrasse 5, CH-8092 Zurich, Switzerland;

    Institute of Geology, Punjab University, Lahore, Pakistan;

    Museum of Natural History, Garden Avenue, Shakarparian, Islamabad 44000, Pakistan;

    Museum of Natural History, Garden Avenue, Shakarparian, Islamabad 44000, Pakistan;

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  • 正文语种 eng
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  • 关键词

    paleostress; fault kinematics; kohistan; pakistan;

    机译：古应力故障运动学朝鲜巴基斯坦;

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