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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Distribution of the right-lateral strike-slip motion from the Main Recent Fault to the Kazerun Fault System (Zagros, Iran): Evidence from present-day GPS velocities
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Distribution of the right-lateral strike-slip motion from the Main Recent Fault to the Kazerun Fault System (Zagros, Iran): Evidence from present-day GPS velocities

机译：从最近的主要断层到卡泽伦断层系统（伊朗扎格罗斯）的右走向走滑运动分布：来自当今GPS速度的证据

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摘要

GPS measurements across the Kazerun Fault System in the Zagros mountain belt provide first instantaneous velocities on the different segments. These results are closely consistent with the geological fault slip rates (over 150 ka), implying stable velocities over a longer period. The present-day strike-slip motion is distributed from the Main Recent Fault to the N-trending Kazerun Fault System along a preferential enechelon fault zone included in a more distributed fan-shape fault pattern. The Hormuz salt decoupling layer cannot be the only cause of a sedimentary spreading because seismicity attests these faults are rooted in the basement. The Dena fault (3.7 mm/yr) transfers the MRF fault slip mainly to the Kazerun (3.6 mm/yr) and slightly to the High Zagros and Sabz Pushan faults (1.5 mm/yr), and the Kazerun fault further to the Kareh Bas fault (3.4 mm/yr). Total geological horizontal offsets associated with GPS slip rates help inferring precise fault slip onset ages. The successive onsets deduced by this approach imply that the right-lateral strike-slip activity of the MRF has propagated in time southeastward to the Dena segment, and then to the Kazerun segment and to the Kareh Bas fault.
机译：扎格罗斯山脉带Kazerun断层系统上的GPS测量提供了不同部分的第一瞬时速度。这些结果与地质断层滑动率（超过150 ka）非常吻合，这意味着可以在更长的时间内保持稳定的速度。今天的走滑运动从主要最近断层到N趋势Kazerun断层系统，沿着优先级的埃涅切龙断层带分布，该层带分布在扇形断层中。 Hormuz盐解耦层不可能是沉积扩散的唯一原因，因为地震证明这些断层根源于地下室。 Dena断层（3.7毫米/年）主要将MRF断层滑动转移到Kazerun（3.6毫米/年），并轻微转移到高Zagros和Sabz Pushan断层（1.5 mm /年），而Kazerun断层进一步转移到Kareh Bas故障（3.4毫米/年）。与GPS滑动率相关的总地质水平偏移量有助于推断精确的断层滑动起始年龄。通过这种方法推断出的连续发作表明，MRF的右走向走滑活动已在时间上向东南传播至Dena段，然后至Kazerun段和Kareh Bas断层。

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