Bonotto, Daniel Marcos [UNESP]2014-05-202014-05-202001-01-01Water-rock Interaction, Vols 1 and 2. Leiden: A A Balkema Publishers, p. 1485-1488, 2001.http://hdl.handle.net/11449/37329This paper describes the results of a study on groundwaters from Tubarao Group at the Parana sedimentary basin, São Paulo State, Brazil. The purpose of this study was to integrate chemical and U-isotopes data in order to evaluate the models for quantifying different relative volumes of mixing waters in a resultant water. Despite it was possible to generate a typical triangle involving U-238 and its daughter U-234, the U-isotopes model failed to interpret the major hydrochemical facies observed in the studied localities.1485-1488engTrabalho apresentado em eventoWOS:000172263500352Acesso aberto7430102726026121