Geometrical and Kinematic Analysis of the Vijenan Anticline - South of Gilan-e-Gharb

The Vijehnan anticline is located to the south of the Gilan-e-Gharb، in the simply folded belt of the Zagros. For analyzing the geometry and kinematics of the anticline، we first produced a geological map using a variety of satellite imagery، published geological maps and field studies. Four structural cross sections (A1-A2، B1-B2، C1-C2، D1-D2) perpendicular to the fold axes are produced in AutoCAD software. To analyze the geometry and kinematics of this fold، the horizontal shortening has been calculated for two cross sections. The average shortening of these cross sections is 11 percent. Kinematics analysis of the Vijehnan anticline based on the Publet & McClay model (1996) indicated that the geometry of the anticline is of detachment fold type. This result is also confirmed by the scheme which was introduced by Jameson (1987). To ensure the accuracy of the results، aspect ratio of the fold have been used which is presented by Sattarzadeh et al. (2000). The calculation of this factor indicates that the Vijenan anticline classified as detachment fold.