شماره ركورد كنفرانس :
4731
عنوان مقاله :
Landslides as paleoseismic indicators along the North Tehran Fault (North of Iran)
عنوان به زبان ديگر :
Landslides as paleoseismic indicators along the North Tehran Fault (North of Iran)
پديدآورندگان :
Torabi Mehdi torabi.mehdi@ut.ac.ir Institute of Geophysics, University of Tehran, Kargar Shomali, Tehran, Iran , Shojaei Saady Mahboubeh Shojaei.m94@ut.ac.ir Institute of Geophysics, University of Tehran, Kargar Shomali, Tehran, Iran , Fattahi Morteza mfattahi@ut.ac.ir Institute of Geophysics, University of Tehran, Kargar Shomali, Tehran, Iran , Ghassemi Mohammad R ghassemi.m.r@gmail.com Research Institute for Earth Sciences, Geological Survey of Iran, Azadi Square, Meraj Avenue, P.O. Box 13185-1494, Iran
كليدواژه :
(Earthquake , induced landslide , Olistolith , Alborz)
عنوان كنفرانس :
هجدهمين كنگره ملي ژئوفيزيك ايران
چكيده فارسي :
Study of large earthquakes in mountainous ranges suggests that earthquakes have always caused multiple landslides. We used Earthquake-induced Landslides for our paleoseismology investigations along North Tehran Fault (NTF). After identifying 4 landslides (Kan (2 landslides), Suleghan and Keshar) we studied them for seismic triggering. Based on our field studies and some other evidences like 958AD Ray-Taleghan earthquake’s report, seismic triggering can be inferred. We collected our OSL samples for dating Suleghan landslide from its Lake sediments which caused by the landslide. We also have a plan to take samples from other landslide so we can compare the ages of landslides. If all four landslides show a similar age, all four of them are triggered in an earthquake and otherwise there will be other scenarios. We also observed Olistolith deposits which they are most likely to be deposited during the paleo-earthquakes (Eocene) in the Karaj sedimentary basin and show inversion tectonics in central Alborz (normal to reverse).
چكيده لاتين :
Study of large earthquakes in mountainous ranges suggests that earthquakes have always caused multiple landslides. We used Earthquake-induced Landslides for our paleoseismology investigations along North Tehran Fault (NTF). After identifying 4 landslides (Kan (2 landslides), Suleghan and Keshar) we studied them for seismic triggering. Based on our field studies and some other evidences like 958AD Ray-Taleghan earthquake’s report, seismic triggering can be inferred. We collected our OSL samples for dating Suleghan landslide from its Lake sediments which caused by the landslide. We also have a plan to take samples from other landslide so we can compare the ages of landslides. If all four landslides show a similar age, all four of them are triggered in an earthquake and otherwise there will be other scenarios. We also observed Olistolith deposits which they are most likely to be deposited during the paleo-earthquakes (Eocene) in the Karaj sedimentary basin and show inversion tectonics in central Alborz (normal to reverse).
