Insights into the petrogenesis of low- and high-Ti basalts: stratigraphy and geochemistry of four lava sequences from the central Paraná basin - De Min, Angelo; Callegaro, Sara; Marzoli, Andrea; Nardy, Antonio Jose Ranalli; Chiaradia, Massimo; Marques, Leila Soares; Gabbarrini, Ilaria (Journal of Volcanology and Geothermal Research, 2018)