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Tectonic control on exhumation and seismicity in the Garhwal-Kumaun Himalaya, NW-India

机译:Garhwal-Kumaun Himalaya,NW-India的挖掘和地震性构造控制

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摘要

Despite similar geological and tectonic setting along the Himalayan orogen, distinct thermochronological/exhumational and seismicity variability exists between the Kumaun and the Garhwal regions of the NW- Himalaya. The processes responsible for such variability are still debated. To understand this, published thermochronological ages from several traverses across the Higher Himalayan Crystalline (HHC) and Lesser Himalayan Crystalline (LHC) have been correlated with the seismicity pattern in both Garhwal and Kumaun segments. The seismicity pattern coincides with the zone of rapid uplift and exhumation. The profiles of seismicity across the Kumaun and the Garhwal regions agree with the existence of the Main Himalayan Thrust (MHT) underlying the regions and reflect its geometry and architecture. Slip along the MHT is responsible for occurrence of seismicity on decade time-scale and exhumation pattern on Myr time-scale of the Himalaya.
机译:尽管沿着喜马拉雅山的地质和构造环境相似,但Kumaun和NW-Himalaya的Garhwal地区之间存在不同的热量/送送和地震性变异。 仍然讨论负责这种变异性的过程。 为了了解这一点,来自较高的Himalayan结晶(HHC)和较小的喜马拉雅结晶(LHC)的几个横向的发表的热量学龄与Garhwal和Kumaun段中的地震性图案相关。 地震性图案与快速隆起和挖掘区域一致。 kumaun的地震性的概况与加沃尔地区的地震性概况同意,地区基础的主要喜马拉雅推力(MHT)并反映其几何和建筑。 沿着MHT的滑动是负责在喜马拉雅州的MYR时间范围内的十年时间规模和挖掘模式的地震性发生。

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  • 来源
    《Terra Nova》 |2020年第1期|共11页
  • 作者单位

    Kurukshetra Univ Dept Geophys Kurukshetra 136119 Haryana India;

    Kurukshetra Univ Dept Geophys Kurukshetra 136119 Haryana India;

    Kurukshetra Univ Dept Geophys Kurukshetra 136119 Haryana India;

    Kurukshetra Univ Dept Geophys Kurukshetra 136119 Haryana India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 天文学、地球科学;
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