Deformation Analysis of Central Iran and Uromia-Dokhtar Magmatic Arc Boundary in Qom Region

Document Type : Original Article

Authors

1 Geology Department- College of Sciences- Golestan University

2 Beheshti Avenue-Gorgan-Iran

3 Oil Exploration Division National Iranian Oil Company

10.22077/jt.2025.9099.1199

Abstract

In this research, the evolution of deformations of the Central Iranian and the Uromia-Dokhtar magmatic belt boundary was analyzed. The Qom region was selected for determining the structures using remote sensing methods and GIS capabilities. By analyzing the structures, the tectonic evolution of this region was investigated through structural studies. The results revealed that the Qom-Zefrah fault, serving as the boundary of these two structural zones, is a basement fault with a right-lateral strike-slip mechanism and some reverse component. This fault has led to uplift in the Urmia-Dokhtar belt and subsidence in the southwestern edge of Central Iran. Additionally, the activity of this fault has resulted in the formation of the Sarajeh and Alborz anticlines through the detachment folding mechanism in the north of the subsided plain. Ultimately, a braided pattern of uplifted-subsided blocks has been formed at the boundary of these structural zones. Kinematic analyses of the structures indicate two stages of deformation on the Qom-Zefreh fault and the adjacent area, possibly attributed to changes in the motion vector in the convergence of the Arabian and Iranian plates.

Keywords

Journal of Tectonics
Volume 7, Issue 27
November 2023
Pages 32-51

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