Preliminary Geometric Model of the Barreiras Aquifer Derived from Hydrogeophysics Data at The River Catu Basin, Ne Brazil

This work presents a synthesis of the preliminary results obtained in studies involving data integration of hydrogeophysical of the “Barreiras” Aquifer, area of the River Catu Basin, eastern coast of the Rio Grande do Norte State. The general methodology is the use of electric geophysical methods, particularly electrical resistivity, besides well lithologic profiles. In our survey, the vertical electric sounding-SEV technique has been used to determinate the saturated thickness. A preliminary map of the geometry of the Aquifer was obtained from the interpolation of the results of those SEVs and information from the available well profiles. We found out that the biggest thickness areas were notably on the oriental sector of this basin (up 90 meters thickness). These places show greater hydrogeological potentials, turning themselves into points from future exploring. Additionally, the map suggests a tectonic-structural control of the aquifer geometry, as the inferred alignments NE and NW and preferential directions similar of this regional organization previously characterized.