@article{hartmann_renner_2025, title={Origin of the reduced, amethyst-mineralized lower tier of the Cordillera Flow, southern Paraná Volcanic Province}, volume={55}, ISSN={2317-4889}, url={https://doi.org/10.1590/2317-4889202520250007}, DOI={10.1590/2317-4889202520250007}, journal={Brazilian Journal of Geology}, publisher={Sociedade Brasileira de Geologia}, author={Hartmann, Léo Afraneo and Renner, Leonardo Cardoso}, year={2025}, pages={e20250007} }