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<p>This study investigates the gypsum deposits in the Bala region of Ankara, Türkiye, focusing on their geophysical characterization by 2D Electrical Resistivity Tomography (ERT). Three ERT profiles were analyzed, revealing significant variations in resistivity, with high-purity gypsum zones exhibiting values between 15 and 3000 Ωm, reflecting the influence of mineral composition, porosity, and water saturation. These zones were delineated from low-resistivity areas (below 50 Ωm) associated with water-saturated sediments or clay formations. The gypsum deposits were mapped to a depth of 30&#xa0;m, displaying lateral variations and significant thickness across profiles. The X-ray Diffraction (XRD) analysis confirmed the high purity of the gypsum samples, thereby enhancing their economic potential for industrial uses in construction, agriculture, and chemistry. The research underscores the efficacy of geophysical and mineralogical techniques for resource assessment in shallow evaporite areas, guaranteeing dependable subsurface characterization and operational safety.</p>

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Geophysical characterization of gypsum deposits in the Bala region (Ankara, Turkey) utilizing 2D electrical resistivity imaging technique

  • 期刊论文

  • 发表日期：

    2025年3月17日

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  • Cihan Yalcin

摘要

This study investigates the gypsum deposits in the Bala region of Ankara, Türkiye, focusing on their geophysical characterization by 2D Electrical Resistivity Tomography (ERT). Three ERT profiles were analyzed, revealing significant variations in resistivity, with high-purity gypsum zones exhibiting values between 15 and 3000 Ωm, reflecting the influence of mineral composition, porosity, and water saturation. These zones were delineated from low-resistivity areas (below 50 Ωm) associated with water-saturated sediments or clay formations. The gypsum deposits were mapped to a depth of 30 m, displaying lateral variations and significant thickness across profiles. The X-ray Diffraction (XRD) analysis confirmed the high purity of the gypsum samples, thereby enhancing their economic potential for industrial uses in construction, agriculture, and chemistry. The research underscores the efficacy of geophysical and mineralogical techniques for resource assessment in shallow evaporite areas, guaranteeing dependable subsurface characterization and operational safety.