Kinematic Analysis of the Nain and Darrech Deh Faults and Their Structural Position in the Western Side of the Central Iranian Range
https://doi.org/10.5800/GT-2024-15-3-0785
EDN: AJDTGB
Abstract
The western margin of Central Iran – the Nain area – is composed of the Mesozoic ophiolitic mélanges deposited during the Late Cretaceous. The Nain and Darrech Deh faults whose trace indicators can be seen in the study area are among the largest faults therein. These faults have a north-northwest strike and are the right-lateral transpressional active lineaments. The main aim of this research is to perform structural mapping and geometric analysis of structural features along the Nain and Darrech Deh fault system. The research was conducted using satellite imagery and field data. The structural analysis showed that the faults comprise a complex network which formed during two stages: 1) thrust faulting in the Late Cretaceous and 2) reactivation of thrust faults in the form of the right-lateral reverse-slip structures as a result of transpressional movements in the Upper Miocene. The Nain and Darrech Deh faults are presently active and exhibit the right-lateral strike slip displacement with a reverse component.
Keywords
Nain area,
ophiolitic mélange,
Nain fault,
Darrech Deh fault,
right-lateral transpressional movement,
Central Iran
Supporting agencies: The research was carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation (FSRW-2023-0002)
About the Authors
S. Beygi
Kimiya Gostar Mining Company
Islamic Republic of Iran
Islamic Republic of Iran
Isfahan
R. K. Ilalova
Saint Petersburg Mining University
Russian Federation
Russian Federation
Regina K. Ilalova
2 21st Line, Saint Petersburg, 199106
I. V. Talovina
Saint Petersburg Mining University
Russian Federation
Russian Federation
2 21st Line, Saint Petersburg, 199106
R. A. Schekoldin
Saint Petersburg Mining University
Russian Federation
Russian Federation
2 21st Line, Saint Petersburg, 199106
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Review
For citations:
Beygi S., Ilalova R.K., Talovina I.V., Schekoldin R.A. Kinematic Analysis of the Nain and Darrech Deh Faults and Their Structural Position in the Western Side of the Central Iranian Range. Geodynamics & Tectonophysics. 2024;15(3):0765. (In Russ.) https://doi.org/10.5800/GT-2024-15-3-0785. EDN: AJDTGB
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