Document Type : Original Research Paper
Authors
1 Ph.D., Department of Geology, Islamic Azad University, Science and Research Branch, Tehran, Iran
2 Associate Professor, Department of Geology, Islamic Azad University, Tehran North Branch, Tehran, Iran
3 Associate Professor, Department of Geology, Islamic Azad University, Science and Research Branch, Tehran, Iran
4 Professor, Department of Geology, Islamic Azad University, Tehran North Branch, Tehran, Iran
5 Assistant Professor, Department of Geology, Islamic Azad University, Science and Research Branch, Tehran, Iran
Abstract
Structural development, caused by active tectonics leads to deformation of morphology features. The Mosha-North Tehran fault zone, located in south edge of the Central Alborz consists of significant tectonic structures. Hence, study on morphotectonic signs is a proper method for evaluation of relative tectonic activities in the area. In this research, six main morphometric indices such as stream length-gradient (SL), drainage basin asymmetry (Af), hypsometric integral (Hi), ratio of valley-floor width to valley height(Vf), drainage basin shape (Bs), and mountain front sinuosity(Smf)were considered. The computations and probes of these indices indicate three classes of relative tectonic activity in the study area from low to high level. Consequently, the drainage basins with high class of tectonic activity mostly coincide with the main faults in south edge of the Central Alborz.
Keywords
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