Document Type : Original Research Paper


1 Research Institute of Earth Sciences, Geological Survey of Iran, Tehran, Iran.

2 College of Science, Faculty of Geology, University of Tehran, Tehran, Iran

3 Geological Survey of Iran, Tehran, Iran


In this research, heterogeneous fault slip data are used as the main data for doing paleostress analysis in North-Tehran tectonic wedge, which is restricted between Mosha and North-Tehran faults. Using these data and paleostress methods, the studied area is divided into 15 smaller stable stress regions and the mean stress tensor related to each region is determined. Then, stress events are separated using Multiple Inverse Method. Based on mean stress tensors -obtained from stress regions- and rotation of fault data orientation -based on Anderson’s theory in compressional tectonic regimes-, the stress trajectory map is sketched for mean stress tensors acting in the regions during geological time. Configurations of trajectories show that they seem to obey the overall tectonic regime in Iran. This result refutes that the North-Tehran tectonic wedge could be a dynamic wedge.


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