Studying structural characteristics of Saqez–Takab Region (NW of Sanandaj–Sirjan Zone) using GiT (Geoinformation Techniques)

Studying  structural  characteristics  of  Saqez–Takab Region  (NW  of  Sanandaj–Sirjan  Zone)  using  GiT (Geoinformation Techniques)


Erfan Haji 1 , Hojjatollah Safari1 , Behnam Shafiee Bafti 1 & Maryam Agh Atabay1

1. Geology Department - Faculty of Sciences - Golestan University, Beheshti Street, Gorgan - Iran

E-mail: e.haji@gu.ac.ir

 



Article info

Original: 06.10.2015
Accepted:05.05.2016
Published online:
15.05.2016





Key Words:

Saqez–Takab Region
GiT Techniques 
RS Methods 
Kinematic Analysis 
Isofracture Map 
Fault Classification





Abstract

Saqez–Takab  Region,  as  the  northwestern  part  of  Sanandaj–Sirjan  deformed  and 

metamorphosed Zone (NW part of Zagros  Fold and Thrust belt, NW of Iran) has been 

studied in this research for detection of structural  characteristics and  tectonic evolution. 

Based  on  the  prepared  lineament  map,  all  faults  (lineaments)  can  be  classified  to  3 

different sets by their length values: the Major, Main and Minor Faults.  Eastern part of 

the  study  region  is the least populated  area  by both the number and the length values of 

measured  faults.  The  faults  with  E-W  strike  trends  are  formed  in  the  east  and  central 

east,  NW-SE trending faults are situated in the north-west  and  central west,  and NE-SW 

trending  faults  can  be  seen  in  the  south-western  part  of  the  region.  By  analyzing  the 

faults  kinematics,  containing  fault  planes  and  P-Axis  values  there  are  at  least  3  main 

structural  generations.  Based  on  comparison  of  the  strike  values  of  outcropped  faults, 

fault  plane  orientations,  P-Axes  values  (directions),  observed  lateral  displacement 

relationships  and  the  other  evidences  the  oldest  fault  set  is  oriented  N135   (ductile 

condition /shear zone) and is dextral. The younger set is N70 (brittle –  ductile condition) 

with both sinistral and reverse slipping; and the  youngest  one has a  mean direction of 

N15  (brittle  condition)  with  a  sinistral  movement.  These  last  movements  of  the  3  old 

fault systems are related to the final deformation phases of Saqez – Takab Region.











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