Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Quaternary Deformation in the west of Shahrood (East Alborz)

Document Type : Original Research Paper

Authors
F. Aarab 1
P. Omidy 2
A. Taheri 2
1 School of Geology, Damghan University of Basic Science, Damghan, Iran
2 Faculty of Earth Science, Shahrood University of Technology, Shahrood, Iran
10.22071/gsj.2011.55224
Abstract
In this paper, the evidences of Quaternary deformation in the west of Shahrood, in an area starting from Deh-Molla valley and extending to Tazareh valley in the southern domain of eastern Alborz have been studied. The studied area is bounded on the North and South by two main faults that trends east- west and dips to north. In the field inspection, the evidences of Quaternary activity like cutting and displacing of Quaternary sediments in some localities such as Deh-Molla and Tazareh valleys have been observed. This study showed that the indications of Quaternary activity are present in the whole of the region; but the North fault with a dominantly left lateral strike slip mechanism that is the eastern continuation of Astaneh fault, has a main role in Quaternary deformation. The left lateral strike slip movement on South fault is finished to east where it connects to a normal transfer fault. This latter transfer fault trends north- south and dips to east.
 
Keywords
Quaternary Deformation
East Alborz
West of Shahrood
Deh-Molla
Tazareh
Astaneh fault
References
Hollingworth, J., Walker. R., Jackson, J., Bolourchi, M. J. &  Eshraghi, S. A., 2006- Left lateral Strike-slip faulting in the East of Alborz, NE Iran, AGU, 87(52), Abstr., Fall Meet. Suppl.
Hollingworth, J., Jackson, J., Walker. R., Gheitanchi, M. R. & Bolourchi, M. J., 2006- Strike-slip faulting, rotation, and along-strike elongation in the Kopeh Dagh Mountains, NE Iran, Geophy. J.I., 166, 1161-1177.
Vernant, P., Nilforoushan, F., Bayer, R., Sedighi, M., Chéry, J., Tavakoli, F. & Masson, F., 2003- Present-day crustal deformation in central Alborz (Iran) inferred from GPS measurements. Geophys. Res. Abstr. 5, p. 11081.
 
Scientific Quarterly Journal of Geosciences
Volume 20, Issue 80
Winter 2011
Pages 89-94