Challenges in geochronological validation of geodynamic mechanisms for silica-undersaturated cretaceous magmatism in central-southern Brazil: the "Silver Bullet" myth - Azzone, Rogério Guitarrari; Chmyz, Luanna; Cetina, Lina; Lima, Nicholas Machado; Lino, Lucas Martins (Simpósio Sul-Brasileiro de Geologia, 2025)