“…Between the Early to Late Cretaceous, the Neuquén Basin changed from a backarc extensional basin to a retroarc foreland basin, in response to a westward acceleration of the South American plate during the Cretaceous (Mpodozis and Ramos, 1990;Howell et al, 2005;Ramos and Kay, 2006;Tunik et al, 2010). Congruent with this tectonic setting, several large-scale drainage systems have been interpreted for the Upper Cretaceous non-marine deposits of the Neuquén Basin, based on stratigraphy and sedimentology (e.g., Di Giulio et al, 2012Giulio et al, , 2017Gómez et al, 2019Gómez et al, , 2020. Provenance analyses in the northern part of the basin (34-35°S) suggest that the foreland basin began Umazano et al, 2009;Ghiglione et al, 2015; J o u r n a l P r e -p r o o f Umazano et al, 2009;Ghiglione et al, 2015;Suriano et al, 2017; J o u r n a l P r e -p r o o f Suriano et al, 2017;Bernet, 2019 and references therein) J o u r n a l P r e -p r o o f Bernet, 2019 and references therein)…”