Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Geometrical and Kinematic Analysis of Western Half of Meyamey Fault

Document Type : Original Research Paper

Authors
F. Bagheri 1
A. Saeidi 2
S. Bouzari 3
1 GIS Group, Geological Survey of Iran, Tehran, Iran
2 Research Institute of Earth Sciences, Geological Survey of Iran, Tehran, Iran
3 Islamic Azad University, North Tehran Branch, Science Faculty, Tehran, Iran
10.22071/gsj.2009.57536
Abstract
       Meyamey fault, one of the major faults in the northeast of Iran, has played an important role in the regional depositional basin development and created many geomorphologic features. This fault has proved to be an important subject for study in terms of structural geology, fault mechanisms, fault interactions and the relation between faults and folds. Field measurements in the eastern part of the Meyamey fault zone depict that faults are mainly striking towards NE with dips of up to 50º and gentle lineation. Folds also follow the same trend. Calculated maximum stress axis in Armain fault is in NE direction, whereas in Meyamey and Ghods faults are in SE direction and are horizontal. Moreover, in the eastern Meyamey fault area, this fault shear zone Chah Seidabad fault, in which X and R, R fractures are evident.
Keywords
Meyamey fault
Maximum main axis
Shear zone
Oblique fault
Step fault
Extension joint
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Scientific Quarterly Journal of Geosciences
Volume 18, Issue 69
Winter 2008
Pages 34-42