Provenance of fine-grained sedimentary rocks derived from Rb-Sr and Sm-Nd analyses: the example of the Santa Maria Formation (Triassic, Parana Basin, Southern Brazil)

in this work, the rb-sr and sm-nd methods were applied to fine-grained sedimentary rock samples of the santa maria formation (triassic, paraná basin) in order to have provenance informations. the sm-nd, although being considered as a new technique when applied to sedimentary rocks is an important parameter to the determination of potentials source rocks. the acquired informations with the sm-nd method and the integration with rb-sr data allowed to propose the reconstruction of the source areas concerning santa maria formation. the results are fundamental to improve these methodologies when applied in sedimentary rocks.