Structural and tectonical study and nomination of Bozgush fold and thrust belt (NW Iran)

Authors

1 Assoc. Prof., Dept., of Earth Sciences, Natural Sciences Colleague, University of Tabriz, Tabriz, Iran, Invited researcher on University of Strasbourg, CNRS UMR7063 – ITES, 5 Rue Ren´e Descartes, F-67084, Strasbourg Cedex, France

2 M. Sc. (graduated), Dept., of Earth Sciences, Natural Sciences Colleague, University of Tabriz, Tabriz, Iran

Abstract

Bozgoush Mountains located in northwestern Iran, between the provinces of East Azerbaijan and Ardabil. Bozgoush ranges include of elevation of the Eocene volcanic and volcanoclastic rocks has been cut by monzonite and microdioritic dikes. The topographic elevations are between the northern and southern Bozgush faults and the faults will drift Bozgoush to the Sarab and Mianeh plains, in general show a Pop up structure. In this study, structural analysis and Neostress states of Bozgosh Mountains is used to tectonic study of the mountains. Evaluation of remote sensing data and structural identification using geological maps show various structures in the area such as faults (with a mechanism of thrust, normal and strike-slip), folds (anticline and syncline) and the basins and uplifts. Results of the stress inversion analysis and study of fault geometries and structures within Bozgoush, was used to determine of changes in the structural components during faulting and folding. In this research we find that the thrust faults have mainly NE-SW and E-W strike and 60 to 80-degree dip. Normal faults mainly have NW-SE direction and 60 to 70 degre dip. Also strike-slip faults have NNW-SSE direction and dip is near to vertical. Stress analysis result shown, the direction of compressional stress regime is NNE-SSW. In all studied area fold axis are parallel to the fault directions. Structural analysis and stress analysis results shown formation of this mountain chain compatible with the transpression tectonic model.

Keywords

New Findings in Applied Geology
Volume 19, Issue 38 - Serial Number 38
December 2025
Pages 97-116

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History

  • Receive Date: 13 May 2024
  • Revise Date: 25 July 2024
  • Accept Date: 27 October 2024

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