Document Type : Original Research Paper


1 Department of Sustainable Advanced Geomechanical Engineering, National University of Science and Technology, Pakistan

2 School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor Bahru, Malaysia

3 Department of Mining Engineering, Balochistan University of Information Technology, Engineering and Management Sciences (BUITEMS) Air port Road Quetta

4 Gümüşhane University, Department of Geophysics, TR-29100 Gümüşhane,Turkey


This research work aims to critically analyze the efficacy of inexpensive and rapid 2D electrical resistivity tomography (2D ERT) survey for sub-surface geological delineation of granite deposits. The research work involves six ERT profiles using the Schlumberger protocol with an inner and outer electrode spacing of 5 m and 10 m, respectively. In addition, the unmanned aerial vehicle (UAV) survey is also performed to obtain the terrain information of the studied area. At the same time, a few boreholes are drilled to validate the 2D ERT interpretations. The 2D ERT survey reveals that strong resistivity contrast enables inverted resistivity imaging to characterize the deposit such as topsoil (100-800 Ωm), fracture granite (800-2300 Ωm), and solid granite (> 2300 Ωm). The results obtained from UAV, 2DERT, and borehole survey are further processed to estimate the bedrock to topsoil ratio to assess the feasibility of the deposit. The bedrock to topsoil ratio, estimated by 2D ERT and borehole, is 3.2 and 2.2, respectively. At the same time, the combined UAV, 2D ERT, and borehole survey calculates the bedrock volume 3.2 times to topsoil. Thus the research work allows us to conclude that 2D ERT is an inexpensive, viable, and efficient technique for sub-surface geological documentation, and helps select appropriate mining methods.


[1]. Wardrop, D., (2012). The accuracy of sand and gravel reserve estimates. Quarterly Journal of Engineering Geology and Hydrogeology. 45 (2): p. 243-247.
[2]. Collis, L. and M. Smith, Aggregates: sand, gravel and crushed rock aggregates for construction purposes. 2001: Geological Society.
[3]. Bichet, V., E. Grisey, and L. Aleya, (2016). Spatial characterization of leachate plume using electrical resistivity tomography in a landfill composed of old and new cells (Belfort, France). Engineering Geology. 211: p. 61-73.
[4]. Meju, M.A., (2002). Geoelectromagnetic Exploration For Natural Resources: Models, Case Studies And Challenges. Surveys in Geophysics. 23 (2): p. 133-206.
[5]. Hinze, W.J., The role of gravity and magnetic methods in engineering and environmental studies, in Geotechnical an Environmental Geophysics: Volume I: Review and Tutorial. 1990, Society of Exploration Geophysicists. p. 75-126.
[6]. Haeni, F., Application of seismic-refraction techniques to hydrologic studies. 1988: US Government Printing Office.
[7]. Tejero, R., D. Gomez-Ortiz, G.G. Heydt, F.M. Toledo, C.M.C. Martínez, M.d.M.S. Rodriguez, and J.J.Q. Suarez, (2017). Electrical resistivity imaging of the shallow structures of an intraplate basin: The Guadiana Basin (SW Spain). Journal of Applied Geophysics. 139: p. 54-64.
[8]. Alemdag, S., M. Sari, and A. Seren, (2022). Determination of rock quality designation (RQD) in metamorphic rocks: a case study (Bayburt-Kırklartepe Dam). Bulletin of Engineering Geology and the Environment. 81(5): p. 1-9.
[9]. Khan, M.S., S. Hossain, A. Ahmed, and M. Faysal, (2017). Investigation of a shallow slope failure on expansive clay in Texas. Engineering Geology. 219: p. 118-129.
[10]. Naudet, V., M. Lazzari, A. Perrone, A. Loperte, S. Piscitelli, and V. Lapenna, (2008). Integrated geophysical and geomorphological approach to investigate the snowmelt-triggered landslide of Bosco Piccolo village (Basilicata, southern Italy). Engineering Geology. 98 (3-4): p. 156-167.
[11]. Coulibaly, Y., T. Belem, and L. Cheng, (2017). Numerical analysis and geophysical monitoring for stability assessment of the Northwest tailings dam at Westwood Mine. International Journal of Mining Science and Technology. 27(4): p. 701-710.
[12]. Falae, P.O., D. Kanungo, P. Chauhan, and R.K. Dash, Recent trends in application of electrical resistivity tomography for landslide study, in Renewable Energy and its Innovative Technologies. 2019, Springer. p. 195-204.
[13]. Carrión-Mero, P., J. Briones-Bitar, F. Morante-Carballo, D. Stay-Coello, R. Blanco-Torrens, and E. Berrezueta, (2021). Evaluation of Slope Stability in an Urban Area as a Basis for Territorial Planning: A Case Study. Applied Sciences. 11 (11): p. 5013.
[14]. Junaid, M., R.A. Abdullah, R. Saa'ri, and N.A. Alel, (2022). An expeditious approach for slope stability assessment using integrated 2D electrical resistivity tomography and unmanned aerial vehicle survey. Journal of Applied Geophysics: p. 104778.
[15]. Junaid, M., R.A. Abdullah, R. Sa’ari, W. Ali, H. Rehman, and M. Sari, (2022). Water-saturated zone recognition using integrated 2D electrical resistivity tomography, borehole, and aerial photogrammetry in granite deposit, Malaysia. Arabian Journal of Geosciences. 15 (14): p. 1-13.
[16]. Dimech, A., M. Chouteau, M. Aubertin, B. Bussière, V. Martin, and B. Plante, (2019). Three‐dimensional time‐lapse geoelectrical monitoring of water infiltration in an experimental mine waste rock pile. Vadose Zone Journal. 18(1): p. 1-19.
[17]. Batista-Rodríguez, J.A. and M.A. Pérez-Flores, (2021). Contribution of ERT on the Study of Ag-Pb-Zn, Fluorite, and Barite Deposits in Northeast Mexico. Minerals. 11 (3): p. 249.
[18]. Junaid, M., R.A. Abdullah, R. Saa'ri, M. Alel, W. Ali, and A. Ullah, (2019). Recognition of boulder in granite deposit using integrated borehole and 2D electrical resistivity imaging for effective mine planning and development.
[20]. Coelho, C., C. Moreira, V. Rosolen, G. Bueno, J. Salles, L. Furlan, and J. Govone, (2020). Analyzing the spatial occurrence of high-alumina clays (Brazil) using electrical resistivity tomography (ERT). Pure and Applied Geophysics. 177 (8): p. 3943-3960.
[21]. Junaid, M., R.A. Abdullah, R. Sa'ari, W. Ali, H. Rehman, M.N.A. Alel, and U. Ghani, (2021). 2d electrical resistivity tomography an advance and expeditious exploration technique for current challenges to mineral industry. Journal of Himalayan Earth Sciences. 54 (1): p. 11-32.
[22]. Hasan, M., Y. Shang, P. Shao, X. Yi, and H. Meng, (2022). Evaluation of Engineering Rock Mass Quality via Integration Between Geophysical and Rock Mechanical Parameters. Rock Mechanics and Rock Engineering: p. 1-21.
[23]. Rusydy, I., T.F. Fathani, N. Al-Huda, K. Iqbal, K. Jamaluddin, and E. Meilianda, (2021). Integrated approach in studying rock and soil slope stability in a tropical and active tectonic country. Environmental Earth Sciences. 80 (2): p. 1-20.
[24]. Imani, P., G. Tian, S. Hadiloo, and A. Abd El-Raouf, (2021). Application of combined electrical resistivity tomography (ERT) and seismic refraction tomography (SRT) methods to investigate Xiaoshan District landslide site: Hangzhou, China. Journal of Applied Geophysics. 184: p. 104236.
[25]. Rezaei, S., I. Shooshpasha, and H. Rezaei, (2019). Reconstruction of landslide model from ERT, geotechnical, and field data, Nargeschal landslide, Iran. Bulletin of Engineering Geology and the Environment. 78 (5): p. 3223-3237.
[26]. Maganti, D., Subsurface investigations using high resolution resistivity. 2008, The University of Texas at Arlington.
[27]. Guinea, A., E. Playà, L. Rivero, and J.M. Salvany, (2014). Geoelectrical prospecting of glauberite deposits in the Ebro basin (Spain). Engineering geology. 174: p. 73-86.
[28]. Hasan, M. and Y. Shang, (2022). Geophysical evaluation of geological model uncertainty for infrastructure design and groundwater assessments. Engineering Geology. 299: p. 106560.
[29]. Gemail, K., S. Shebl, M. Attwa, S.A. Soliman, A. Azab, and M. Farag, (2020). Geotechnical assessment of fractured limestone bedrock using DC resistivity method: a case study at New Minia City, Egypt. NRIAG Journal of Astronomy and Geophysics. 9 (1): p. 272-279.
[30]. Ishak, M.F., M.I. Zaini, M. Zolkepli, M. Wahap, J.J. Sidek, A.M. Yasin, M. Zolkepli, M.M. Sidik, K.M. Arof, and Z.A. Talib, (2020). Granite Exploration by using Electrical Resistivity Imaging (ERI): A Case Study in Johor. International Journal of Integrated Engineering. 12 (8): p. 328-347.
[31]. Hutchison, C. and D.N. Tan, (2009). Geology of Peninsular Malaysia. The University of Malaya and the Geological Society of Malaysia, Kuala Lumpur: p. 479.
[32]. Longo, V., V. Testone, G. Oggiano, and A. Testa, (2014). Prospecting for clay minerals within volcanic successions: application of electrical resistivity tomography to characterise bentonite deposits in northern Sardinia (Italy). Journal of Applied Geophysics. 111: p. 21-32.
[33]. Lesparre, N., A. Boyle, B. Grychtol, J. Cabrera, J. Marteau, and A. Adler, (2016). Electrical resistivity imaging in transmission between surface and underground tunnel for fault characterization. Journal of Applied Geophysics. 128: p. 163-178.
[34]. Persson, L., I.A. Lundin, L.B. Pedersen, and D. Claeson, (2011). Combined magnetic, electromagnetic and resistivity study over a highly conductive formation in Orrivaara, Northern Sweden. Geophysical Prospecting. 59 (6): p. 1155-1163.
[35]. Bharti, A.K., S. Pal, P. Priyam, V.K. Pathak, R. Kumar, and S.K. Ranjan, (2016). Detection of illegal mine voids using electrical resistivity tomography: The case-study of Raniganj coalfield (India). Engineering Geology. 213: p. 120-132.
[36]. Available from: 0ahUKEwjvkoX_5tXgAhUGON8KHdbNDfUQ_AUIDigB&biw.
[37]. Montani, C., (2003). Stone 2002—World marketing handbook. Faenza, Gruppo Editoriale Faenza Editice, Faenza.