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). Lajsba [Internet]. 2021 Mar. 31 [cited 2025 Jun. 10];13(2):135-49. Available from: http://www.gananventas.com/lajsba/article/view/90