GPR prospecting of fluvial-eolian interaction deposits in the Bermejo Valley, NW Argentina

ZABALA MEDINA, PETER; BONOMO, NÉSTOR; SALVO BERNÁRDEZ, SALOMÉ; LIMARINO, OSCAR

Porto

Congreso; Near Surface Geoscience Conference & Exhibition; 2018

European Association of Geoscientists and Engineers

In this work wepresent results of a prospecting carried out with GPR and field observations,to determine the composition and geometrical characteristics of an eolic-fluvialinteraction environment in Argentina.Three depositional subenvironments were defined and investigated: 1) eolianchannel, 2) eolian interchannel and 3) muddy interchannel. In each of them, weacquired GPR data with antennas of different nominal frequencies in order toevaluate their resolutions and penetrations. From the GPR data sections, it waspossible to identify numerous reflectors that were interpreted in terms of thefield data. The applied methodology resulted very efficient for describing thecomplex deposits and provided relevant information for later constructingmodels for reservoir characterization