TY - JOUR ID - 131653 TI - Morphotectonics and Slip rate of the Khazar fault in Central Alborz, (North of Iran) JO - Scientific Quarterly Journal of Geosciences JA - GSJ LA - en SN - 1023-7429 AU - Nazari, Hamid AU - Ritz, Jean-Francois AU - Avagyan, Ara AD - Associate Professor, Research Institute for Earth sciences, Geological Survey of Iran, Tehran, Iran AD - Professor, Laboratoire Géosciences, Université de Montpellier-CNRS, Montpellier, France AD - Professor, Institute of Geological Sciences, National Academy of Sciences, Yerevan, Armenia Y1 - 2021 PY - 2021 VL - 31 IS - 2 SP - 101 EP - 110 KW - Khazar fault KW - Active Tectonics KW - Thrust Fault KW - Foreberg KW - Slip Rate DO - 10.22071/gsj.2021.259868.1863 N2 - The Alborz mountain range accommodates some of the convergence between Central Iran and Eurasia. At present, the kinematics of the range involves a strain partitioning mechanism, and is associated with clockwise rotation of the South Caspian Basin. left-lateral strike-slip faulting is present along the entire of its central part, while reverse faulting is affects its northern and southern borders. Several slip-rate studies have been carried out along active faults in the internal and southern parts of the range. Our analysis provides new constraints on the activity of this important active thrust fault. We show that the fault generally is a hidden thrust fault, often associated with fault-bend and fault-propagation folds (forebergs). In the central part of the fault near Chamestan, radiocarbon dating on an old elevated terrace allows estimating the minimum vertical slip of 2.0± 0.5 mm / year. Considering a 34 degree slope for the fault, the minimum horizontal slip rate will be 3 mm/yr and the minimum slip rate along the fault plane will be up to 3.6 mm / year. Our results confirm that the Khazar Fault is a major active structure in northern Iran, and represents a significant seismic hazard for the entire Central Alborz region. UR - http://www.gsjournal.ir/article_131653.html L1 - http://www.gsjournal.ir/article_131653_6d93d3d58b13ad107bc625c03445f252.pdf ER -