Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Preliminary Results of Paleoseismologic Trenching along the Astaneh Fault

Document Type : Original Research Paper

Authors
M. Shokri 1
M. Ghorashi 2
H. Nazari 3
R. Salamati 4
M. Talebian 3
J.-F. Ritz 5
H. Mohammad khani 4
M. Shahpasand zadeh 6
1 North Tehran branch, Azad University, Tehran ,Iran
2 North Tehran branch, Azad University, Tehran ,Iran Research Institute for Earth Sciences, Geological Survey of Iran, Tehran ,Iran
3 Research Institute for Earth Sciences, Geological Survey of Iran, Tehran ,Iran Geological Survey of Iran, Tehran,Iran
4 Geological Survey of Iran, Tehran,Iran
5 Labratoire Geosciences Montpellier-Universite' Montpellier II, Montpellier ,France
6 International Institute of Earthquake Engineering and Seismology, Tehran, Iran
10.22071/gsj.2009.57378
Abstract
The Astaneh fault with a length of more than 75 km is located in NW of Damghan. Morphotectonic investigation along the Astaneh fault and left - lateral displacement in quaternary deposits shows that, Astaneh is an active fault. It is necessary to recognize paleoseismicity of Astaneh fault because, this fault is located in seismic zone of Komes historical earthquake with Ms=7.9 (Ambraseys & Melville, 1982). Many people (more than 45000) were killed in Damghan city in Komes historical earthquake. In this paper, 4-5 paleo events along the Astaneh fault are presented  through paleoseismological investigation.
 
Keywords
Paleoseismology
Historical earthquake
Morphotectonics
Paleo-event
Damghan
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Scientific Quarterly Journal of Geosciences
Volume 18, Issue 70
Winter 2009
Pages 84-93