Abstract In this study, the analytical hierarchy process (AHP) was used to enhance the accuracy of the results obtained from the geomorphic analysis of tectonic activity. For this purpose, the relative tectonic activity index was computed by applying different and specific weights to each index based on the general geological and structural conditions of the study area. The Kuh-e-Sarhangi Mountain with a NE-SW strike is located in the northern part of the Tabas Block in the Central Iran Plate. The Kuh-e-Sarhangi Fault is considered one of the major faults in Central Iran and shows evidence of Quaternary activity. In this study, in order to evaluate the activity of the faults, six morphotectonic indices were computed and the different conditions which influenced the morphometric factors were considered and analyzed. The relative tectonic activity of Kuh-e-Sarhangi was classified based on the analytical hierarchy process method. These results were confirmed by field studies. The results of this method fitted well with some independently detected Quaternary faults and other reactivated faults in the Kuh-e-Sarhangi Mountain. With a right-lateral movement, some of these faults have caused the displacement of rivers up to 900 meters. The dispersal of the high tectonic activity classes based on the AHP method conforms to the post-Neogene activity of the region. The distribution of the classes illustrates that morphotectonic anomalies correspond with the incised alluvial fans and terraces and the bisected and displaced rivers in the study area. Accordingly, the integration of the results of field investigations, satellite images, morphometry, and the AHP method shows a high accordance with the active structures and demonstrates that the study area is tectonically active. This analysis illustrates the recent movements of the Kuh-e-Sarhangi Fault and the activity of the Lut Block due to the convergent movement of the Arabian plate toward Eurasia.

中文翻译：

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使用层次分析法对伊朗中部卢特地块西北边缘的相对构造活动进行定量评估

摘要 本研究采用层次分析法(AHP)来提高构造活动地貌分析结果的准确性。为此，根据研究区的一般地质和构造条件，通过对每个指数应用不同的特定权重来计算相对构造活动指数。具有 NE-SW 走向的 Kuh-e-Sarhangi 山位于伊朗中部板块 Tabas 地块的北部。Kuh-e-Sarhangi 断层被认为是伊朗中部的主要断层之一，并显示出第四纪活动的证据。本研究中，为了评价断层的活动性，计算了六个形态构造指数，并考虑和分析了影响形态测量因素的不同条件。Kuh-e-Sarhangi的相对构造活动是基于层次分析法进行分类的。这些结果得到了实地研究的证实。这种方法的结果与 Kuh-e-Sarhangi 山中一些独立检测到的第四纪断层和其他重新激活的断层非常吻合。随着向右移动，其中一些断层已导致河流位移达 900 米。基于层次分析法的高构造活动类别的分散符合该地区的后新近纪活动。类的分布表明，地貌构造异常与研究区切开的冲积扇和阶地以及一分为二和移位的河流相对应。因此，整合实地调查、卫星图像、形态测量学的结果，层次分析法与活动构造高度吻合，表明研究区具有构造活动性。该分析说明了 Kuh-e-Sarhangi 断层最近的运动以及由于阿拉伯板块向欧亚大陆的会聚运动导致的 Lut 地块的活动。