Geology, Structures and 2D Resistivity Imaging of the Main Observatory Station of the Center for Geodesy and Geodynamics, Toro, Bauchi State Nigeria

M. J. Abba and Idris. Alhassan
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M. J. Abba: Center for Geodesy and Geodynamics, Toro, Bauchi State
Idris. Alhassan: Center for Geodesy and Geodynamics, Toro, Bauchi State

International Journal of Research and Scientific Innovation, 2025, vol. 12, issue 1, 848-861

Abstract: Electrical resistivity method was used in carrying out geophysical investigations at the Centre for Geodesy and geodynamic Toro observatory station, Bauchi state with a view of determining the geology, structures and depth of the lithology of the basement. The Toro observatory station is undererlained by an Older Granite Rock of Migmatite-Gneise composition, the Lineaments observed at the field and satellite imagery are trending in the NE-SW direction. Vertical Electrical Sounding (VES) using Schlumberger array was carried out at forty (40) VES, ABEM terrameter (SAS 1000) was used for the data acquisition. The field data obtained have been analyzed using computer software (IPI2win) which gives an automatic interpretation of the apparent resistivity. Results from the interpretation suggest three layers in most parts of the study area. However, there is a case of two layers at the station. The resistivity value for the topsoil layer varies from 2 to 738Ωm with thickness ranging from 1 to 3.9meters, the weathered basement has resistivity values ranging from 32 to 1735Ωm and thickness of between 0.52 and 23 meters. The fresh basement(bedrock) has resistivity values ranging from 100 to 6,036Ωm which prove that the area is very stable for the establishment of the observatory station for carrying out earth observation research as well as monitor and predict geo-hazards using Space Geodetic and Geo-physical techniques for sustainable National Development.

Date: 2025
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