Dataset for: The volcanism of the Meseta del Lago Buenos Aires, Patagonia: the transition from subduction to slab window

Dataset for manuscript entitled, "The volcanism of the Meseta del Lago Buenos Aires, Patagonia: the transition from subduction to slab window " by Guest et al. published in Journal of Petrology. Here we report new major, minor and trace element contents, as well as Sr, Nd, Pb, and Hf isotopes of the Meseta del Lago Buenos Aires (MLBA) lavas. We also report estimated mantle equilibration temperatures and pressures of MLBA lavas after correction for olivine fractionation after Plank and Forsyth (2016). Additionally, we report new Hf and Pb isotopes of lavas erupted along the Chile Ridge.