Fractal Analysis of Mengharak Transcurrent Fault System In Zagros, Iran

[ M. Arian ] - Head of Research Department of Geology, Research Institute of Applied Sciences ACECR, Shahid Beheshti University, Tehran
[ M. Qoreshi ] - Assoc. Professor, Deputy Director of Geological Survey of Iran
[ M. Pourkermani ] - Professor of Structural Geology, Shahid Beheshti University, Tehran
[ A. Ahmadnia ] - Head of Surface Geology Division, Exploration Management, National Iranian Oil Company

خلاصه مقاله:

Mengharak is one the transverse fault systems in Zagros fold-thrust belt. Mengharak Transcurrent Fault System (MTFS) with a total length of 200 Km is situated about 80 Km east of the Borazjan segment (a part of Kazerun fault zone) and 40 Km west of Shiraz.It is a nearly N-S trending right-lateral linked strike-slip fault system and several anticlinal axes has displaced by it. Strike separation (109 Km) of Mountain Front Fault / Flexure (MFF) of Zagros is the most important function of MTFS.According to fractal analysis (Box-counting method) on space image maps (1:50000) prepared from Spot data, fault related surface ruptures have non-linear patterns and fault segments have nearly plane form fractal dimensions; Specially at north and south terminations. In the other words, north and south terminations of MTFS are active and latter case is more active, because it is coinciding on Zagros mountain front faults (MFF).