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首页> 外文期刊>Surveys in Geophysics: An International Review Journal of Geophysics and Planetary Sciences >Geodynamic Implications for the 8 October 2005 North Pakistan Earthquake
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Geodynamic Implications for the 8 October 2005 North Pakistan Earthquake

机译：2005年10月8日巴基斯坦北部地震的地球动力学意义

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摘要

We propose here that the 8 October 2005 North Pakistan earthquake occurred beneath the wedge-top of Balakot Formation in the Hazara-Kashmir syntaxial area. Slip occurred along the Muzaffarabad thrust, a southeast extended part of the Indus-Kohistan seismic zone. Tectonic loading of the high-density wedge/thrust sheet between the wedge-top and the descending Indian lithosphere coupled with continued flexural tectonics provoked this earthquake. The obliquely converging Indian plate along with block rotations led to development of a pinned zone around Northwestern Syntaxis of the Himalayas. Strain adjustment related to the rotational deformation processes resulted in the buckling of the more competent rock-units sandwiched between the less competent rock-units around the Hazara-Kashmir syntaxis. The western limb of the buckled unit gave rise to the development of thrusts and associated oblique slip in the inner arc of the competent rock-unit. The observations demonstrate reactivated tectonic movement along the growing fracture-tip of the buried Riasi thrust.
机译：我们在此建议，2005年10月8日的巴基斯坦北部地震发生在哈扎拉克什米尔语法地区Balakot组的楔形顶部以下。沿印度洋-科希斯坦地震带东南延伸的Muzaffarabad逆冲发生了滑动。楔形顶部与下降的印度岩石圈之间的高密度楔形/逆冲板块的构造载荷加上持续的弯曲构造作用引发了这场地震。斜交的印度板块与块体旋转一起导致了喜马拉雅山西北纪线周围的固定带的发展。与旋转变形过程相关的应变调整导致夹在Hazara-Kashmir句法周围的能力较弱的岩石单元之间的能力更强的岩石单元屈曲。弯曲单元的西边在主管岩石单元的内弧上产生了推力和相关的倾斜滑移。观测结果表明，沿着埋藏的里亚西逆冲断层的不断增长的断裂尖端重新构造了运动。

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