Deep Fracture Mapping and Groundwater Potential Assessment Using Magneto Telluric (MT) Resistivity Imaging in Kilambakkam Region

Mohamed Afzal J
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Mohamed Afzal J: Department of Geology, University of Madras, Guindy Campus, Chennai, India 600025

International Journal of Latest Technology in Engineering, Management & Applied Science, 2025, vol. 14, issue 3, 668-674

Abstract: Groundwater exploration in hard rock terrains requires advanced geophysical techniques to identify high-yielding aquifers. This study utilizes Magneto telluric (MT) resistivity imaging to delineate subsurface fracture zones and assess groundwater potential in the Kilambakkam region. The resistivity profiles reveal a complex hydrogeological setting characterized by shallow weathered zones (50m-100m depth) with low water yield, deeper fractured aquifers (120m-250m depth) with moderate yield, and deep-seated fault zones (180m-300m depth) exhibiting high groundwater potential. Two primary borewell target zones have been identified based on low resistivity anomalies (1-6 Ωm), indicating significant water-bearing formations. The study emphasizes the importance of integrating geophysical surveys with hydrogeological data to optimize borewell placement and enhance sustainable groundwater extraction. Further validation through vertical electrical sounding (VES) and pumping tests is recommended to ensure long-term aquifer viability.

Date: 2025
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