Geophysical Prospecting · 1984 · 13 citations · 0 references
Natural SciencesEarth SciencesGeophysicsGeomagnetismHydrogeologyVolcanologyCrustal MagnetismElectrical Resistivity MethodsGroundwater GeophysicsMagnetic MethodsMagnetic SurveyingRock MagnetismGeophysical Data AnalysisGroundwater ReservesHydrogeological InvestigationHydrogeological RegimeMagnetic SurveysMagnetization MeasurementMagnetotelluric SurveyingResistivity
A bstract Volcanic maar structures sometimes contain important groundwater reserves. The volcanic formations of the Beaunit maar have a much higher magnetization than their granite substrata. The structure of the maar and its volcanoclastic infill can therefore be defined by magnetic surveying and resistivity soundings. Resistivities of the geological formations present in the Beaunit maar are comparable to those recorded in other volcanic systems. The geophysical data, confirmed by drilling tests, contain useful information on the hydrogeological regime of the volcanic system under investigation.