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 2026 Jan. 15];13(2):135-49. Available from: http://149.50.135.151/lajsba/article/view/90