The geothermal System of Rosario de la Frontera (Salta, Argentina): preliminary geochemical and hydrogeological results.

PIERANTONI P; INVERNIZZI C; GIORDANO G; CORRADO S; MAFFUCCI R.; CHIODI A., ; TASSI F., ; VIRAMONTE JOSÉ GERMÁN

Modena

Congreso; Gigs Annual Meeting 2012.; 2012

This study is part of the multidisciplinary investigation of the thermal springs emerging in the area of Rosario de La Frontera (La Candelaria Ridge, Salta, Argentina; CUIA PROJECT call 2010-11); it is carried out in order to produce a preliminary evaluation of geothermal potential of this system. These surface thermal manifestations, whose temperature ranges from 22.7 to 93.3 °C, are located in the northern sector of the La Candelaria Ridge anticline in the province of Salta (NW Argentina; SEGEMAR, Catálogo de Manifestaciones Termales de la República Argentina; SEGGIARO et alii, 1997). The study is based on analytical evidence of the chemical and isotopic composition (18O, D e 13C-CO2) of 13 water samples and 5 gas samples taken from hot springs emerging in this restricted area. Furthermore, more than 80 stations for structural data acquisition have been performed in order to recognize main fracture system network. These data are important to evaluate the reservoir permeability and to determine main fluid flow directions at depth.