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Tectonics Movements of Kuhbanan Fault System in Bahabad Region, Central Iran
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نویسنده
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Shafiei Bafti A.
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منبع
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Iranian Journal Of Earth Sciences - 2009 - دوره : 1 - شماره : 1 - صفحه:92 -98
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چکیده
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Kuhbanan fault system, as one of the intracontinental faults of central iran, is recognized by considerable seismogenic activities and modern morphotectonics evidences with a strike-slip (reverse component) motion. according to the geometric and kinematics data, kuhbanan fault has been divided into 5 segments (s26, s27, s28, s29, s30) in bahabad region. measured geomorphic indices of ratio of valley-floor width to valley height (vf) and morphology of the valley (v) manifest the maximum denudation rate for the s28 segment. the mean calculated values of mountain-front sinuosity (smf) and %facet parameters for different segments of the fault are 1.1 and 83.16, consequently. regarding to these geomorphic indices, a denudation rate of about 2-4 mmyr-1 is suggested for this region. according to reconstruction of kuhbanan fault since 360 ka, minimum horizontal cumulative displacement of 750 m and minimum slip rate of about 2-1.4±0.1 mmyr-1 is inferred from well preserved geomorphology in the northern segment of the fault. applying this horizontal cumulative displacement causes reconstruction of geomorphic markers such as drainages and shuttered ridges.
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کلیدواژه
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Active Tectonics ,Geomorphic Indices ,Drainage Reconstruction ,Cumulative Displacement ,Slip Rate ,Kuhbanan Fault System
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آدرس
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Islamic Azad University, ایران
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پست الکترونیکی
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kalamus51@hotmail.com
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Authors
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