RT Journal Article T1 Algunos aspectos de la hidroquímica del sistema acuífero Botucatú (Cuenca del Paraná, Estado de Sáo Paulo, Brasil) T1 Some considerations about the hydrochemistry of Botucatú Aquifer System (Paraná Basin, Sáo Paulo State, Brasil) A1 Campos, H. C. A1 Cerón García, Juan Carlos AB The principal hydrochemical features of the Botucatú aquifer system in Sao Paulo State - SE Brasil - was studied from 67 groundwater chemical analysis. Westward, in the Botucatú aquifer system the progressive confining condition, with depth of the top of aquifer layer, increases the groundwater temperature slowly.Moreover, the residence time increases the water salt content towards the natural flow direction (E-W). As résults ,th'e recent calcium and magnesium bicarbonate groundwater change first to sodium bicarbonate and them to sodium chloride-sul.fate PB Sociedad Geológica de España YR 1997 FD 1997 LK http://hdl.handle.net/10272/10376 UL http://hdl.handle.net/10272/10376 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026