Jimenez-Rueda, JRBonotto, Daniel Marcos [UNESP]2014-05-202014-05-202001-01-01Water-rock Interaction, Vols 1 and 2. Leiden: A A Balkema Publishers, p. 407-410, 2001.http://hdl.handle.net/11449/38490This paper describes the results of a study involving the sampling of a soil profile developed over sandstone from Itarare Sub-Group at the Parana sedimentary basin, Brazil. It was carried out to integrate chemical and U-isotopes data in order to improve the knowledge of the weathering processes acting in the area. U-238 and its daughter U-234 proved to be important tools for evaluating physical and chemical alteration, allowing to suggest a possible timescale for the development of the more superficial soil horizons.407-410engTrabalho apresentado em eventoWOS:000172263500088Acesso aberto7430102726026121