Document Type : Original Research Paper

Authors

1 Faculty of Sciences, Geology Department, Scholar of Science and Research Branch, Azad University, Tehran, Iran

2 Research Institute for Earth Science, Geological Survey of Iran, Tehran, Iran

3 Geological Survey of Iran, Tehran, Iran

Abstract

The North Tehran Fault with a length of about 110 km in North of Tehran and soutern of central Alborz with W-E trend (N25˚E) and dipping (30˚NE) is located in western of Mosha Fault.The branch of Chitgar such as Milad and Vardavard Fault in the form of propagation fault is increased toward south. Previous morphotectonical investigation along the North Tehran Fault show that shear of quaternary sedimentation and pressure mechanism with left-lateral component. Determination of seismic parameter and seismic action that result of this fault movement, need to doing paleoseismological investigation. In this text with using stratigraphy correlation method, estimated of subsidence rate is 0.16 mm/yr and logging with  ratio and ortho photography method, 3-6 event is determined with 6.4-7.4 magnitude and recurrence

Keywords

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