RT Journal Article T1 Origen de la surgencia del Balneario de San Andrés (Provincia de Jaén) A1 Hidalgo Estévez, Mari Carmen A1 Rey Arrans, Javier A1 Redondo, L. AB The hydrogeological context of the San Andrés spa (province of Jaén) is analysed in this work. Piezometric data, hydrochemical analysis and groundwater quality trends are discussed for groundwater samples obtained from the main aquifer units in the region (jurassic carbonatic aquifer and miocene detrital aquifer) in order to stablish the origin of the San Andrés spring. Considering altitude, discharge rate, temperature and hydrochemical features of the spring, it seems to be related to the miocene hydrogeological unit PB Sociedad Geológica de España YR 1997 FD 1997 LK http://hdl.handle.net/10272/10324 UL http://hdl.handle.net/10272/10324 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026