Hydrogeological Characterization by Electrical Resistivity Tomography (ERT) of the hamlet Viña, district of Magdalena, Cajamarca 2024

Abstract

The objective of this research is the hydrogeological characterization by Electrical Resistivity Tomography (ERT) of the hamlet La Viña. It has been perceived that the supply of drinking water is limited, affecting agricultural activities. The research approach is quantitative, applied, descriptive-exploratory and with an experimental design, with a population of geological formations and structures of the hamlet La Viña and with a sample of 7 points of electrical resistivity tomography (ERT), which resulted in the identification of formations such as Chúlec, Pariatambo with limestones and chevron folded shales (flanks N265/53 and N109/73), in NW/SE direction - 40°/60°; Quaternary alluvial deposits are defined by 2 streams with direction N280-N275. From the 7 ERTs, 3 lithostratigraphic units were defined, the first stratum as low porosity and highly resistive rock ranging from 1.6 Ω.m to 42.00 Ω.m with thicknesses from 1, 00 m to 60, 00 m and depths from 45, 00 m to 200, 00m. The second stratum has resistivities of 1, 12 Ω.m to 36 Ω.m with thicknesses of 3, 5 m to 60, 00 m and depths of 10, 00 to 140, 00 m consists of rocks with clayey soils of low permeability. The third stratum has resistivities of -0, 3 Ω.m to 29 Ω.m, with thicknesses of 2, 5 m to 20, 00 m, depth ranging from 10, 00 m to 160, 00 m; lithologically they are composed of porous rock formation and groundwater saturation.