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<p>The Tijekht and Tazoult n’Ouzina anticlines, located in the eastern Anti-Atlas of Morocco, exhibit a complex structural history, largely linked to the Variscan orogeny. This study presents a detailed analysis of the structural and tectonic evolution of these anticlines, emphasizing on both ductile and brittle deformation, and to determine the relationship between Variscan shortening and the large distribution of mineralized veins in the Tijekht and Tazoult n’Ouzina zones. Field data, satellite imagery, and structural analysis have been used to investigate the geometry and kinematics of key structures, such as anticlines and fault systems. The finding reveals a multi-phase tectonic history with three significant deformation phases, including early NW-SE compression that generated large-scale folds, followed by NE-SW compression, which reactivate pre-existing faults and generates miner folds with N-S to NNE-SSW axes, leading to an interference pattern and it is interpreted to have resulted in the refolding of the Tijekht anticline. The later phase is represented by extensional tectonics associated with the opening of the Central Atlantic. The structural analysis exhibit four fault systems: NE-SW, N-S to NNE-SSW, ENE-WSW, and E-W to ESE-WNW. Particularly the NE-SW and E-W oriented fault systems, are closely associated with significant mineralization, including barite, lead, copper, and zinc sulfides. These structures reflect a multi-phase tectonic history affecting the Tijekht and Tazoult n’Ouzina anticlines.</p>

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Structural position over the Variscan shortening of the Tijekht and Tazoult n’Ouzina anticlines, Moroccan eastern Anti-Atlas

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • Omar Saidi,
  • Abdeslam Toummite,
  • Mustapha Ait Daoud,
  • Asma Zouggarh,
  • Brahim Es-Sabbar,
  • Ali El-Masoudy,
  • Mourad Essalhi,
  • Abdelhafid Essalhi

摘要

The Tijekht and Tazoult n’Ouzina anticlines, located in the eastern Anti-Atlas of Morocco, exhibit a complex structural history, largely linked to the Variscan orogeny. This study presents a detailed analysis of the structural and tectonic evolution of these anticlines, emphasizing on both ductile and brittle deformation, and to determine the relationship between Variscan shortening and the large distribution of mineralized veins in the Tijekht and Tazoult n’Ouzina zones. Field data, satellite imagery, and structural analysis have been used to investigate the geometry and kinematics of key structures, such as anticlines and fault systems. The finding reveals a multi-phase tectonic history with three significant deformation phases, including early NW-SE compression that generated large-scale folds, followed by NE-SW compression, which reactivate pre-existing faults and generates miner folds with N-S to NNE-SSW axes, leading to an interference pattern and it is interpreted to have resulted in the refolding of the Tijekht anticline. The later phase is represented by extensional tectonics associated with the opening of the Central Atlantic. The structural analysis exhibit four fault systems: NE-SW, N-S to NNE-SSW, ENE-WSW, and E-W to ESE-WNW. Particularly the NE-SW and E-W oriented fault systems, are closely associated with significant mineralization, including barite, lead, copper, and zinc sulfides. These structures reflect a multi-phase tectonic history affecting the Tijekht and Tazoult n’Ouzina anticlines.