Abstract We used satellite images, earthquake catalogues and field observations to study several active fault systems and their interactions in Sabzevaran Area in SE Iran. The focus of this study is to verify the link between the active faults, their kinematics and seismic activity. Field observations and geomorphological analysis highlight the interaction of the active faults. Moreover, most of the tectonic activity is observed in the area, related to the Chahmazrae- North Faryab shear zone. Most of the earthquakes in this shear zone are reverse and occur in the deeper crust while aftershocks dominantly occur in the shallower crust. The Main Zagros Reverse Fault (MZRF) is the source of reverse events and the Chahmazrae- North Faryab shear zone is source of left-lateral, oblique reverse faulting events, and strike-slip events. These types of the earthquakes in the study area confirm the idea of tectonic proximity of the root faults and shear zone. In the interaction area, minor fractures begin to develop and are progressively linked to the main faults. In the en echelon arrangement of the faults, the minor faults have grown and linked the en echelon segments of the faults. It seems that the earthquake ruptures can spontaneously propagate across both extensional and the compressional fault steps. This propagation occurs along strike-slip faults such as Sabzevaran fault and its branches.

中文翻译：

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伊朗东南部 Sabzevaran 地区相互作用断层的形态构造和地震数据分析

摘要 我们使用卫星图像、地震目录和现场观测来研究伊朗东南部 Sabzevaran 地区的几个活动断层系统及其相互作用。本研究的重点是验证活动断层及其运动学和地震活动之间的联系。现场观测和地貌分析突出了活动断层的相互作用。此外，大部分构造活动发生在该地区，与 Chahmazrae-North Faryab 剪切带有关。该剪切带的大部分地震是反向地震，发生在较深的地壳，余震主要发生在较浅的地壳。扎格罗斯主逆断层 (MZRF) 是逆向事件的来源，而 Chahmazrae-North Faryab 剪切带是左侧斜逆断层事件和走滑事件的来源。研究区这些类型的地震证实了根断层和剪切带构造接近的想法。在相互作用区，小裂缝开始发育并逐渐与主要断层相连。在断层的梯级排列中，小断层已经生长并连接了断层的梯级段。地震破裂似乎可以自发地跨越拉伸和压缩断层台阶。这种传播发生在走滑断层，如 Sabzevaran 断层及其分支。小断层已经长大并连接了断层的梯级段。地震破裂似乎可以自发地跨越拉伸和压缩断层台阶。这种传播发生在走滑断层，如 Sabzevaran 断层及其分支。小断层已经长大并连接了断层的梯级段。地震破裂似乎可以自发地跨越拉伸和压缩断层台阶。这种传播发生在走滑断层，如 Sabzevaran 断层及其分支。