Investigation on Neotectonic Activity in Garangoo Basin Using Morphotectonic and Geomorphic Indexes

Drainage networks and fluvial landscapes are responses to changes on river beds. These responses including fluvial traceses, changing longitudinal profiles and cross sections and lateral migration are associated with the increase of erosion rates. In study area (located at 47º 42' to 46º 27' E and from 37º 44' to 36º 58' N, situated on eastern slopes of Sahand Mountain), transverse drainage network, fluvial terraces, faults, folds and salt domes prove neotectonic activity. The results of investigation on longitudinal profiles of rivers using hypsometric approach and indexes, show that tectonic activity has affected drainage networks in Garangoo basin. Topographic and geomorphic features and river valley streams relate to uplift at the middle and southern sections of Garangoo basins. Also presence of knick points on longitudinal profiles and anomalies at drainage networks are related to tectonic activity in the study area.