“…The oldest cooling age and the thermal histories of Choiyoi Group samples reflect and Albian-Campanian cooling episode, lasting since ∼110 to 75 Ma (Table 1, Figures 8a, 8b, and 10c, and stage 1B in Figure 9c). This cooling episode is consistent with: (i) the onset of the Andean orogeny interpreted by provenance studies in the foreland of the Southern Andes between 34°S and 39°S Borghi et al, 2019;Di Giulio et al, 2012Gómez et al, 2019;Tunik et al, 2010) (Figures 2 and 3); (ii) the beginning of exhumation and magmatism in the fore-arc (Glodny et al, 2008;Tapia et al, 2020); and (iii) a major change in plate's configuration and spreading rates at a global scale (Matthews et al, 2012;Müller et al, 2016;Somoza & Zaffarana, 2008). Assuming the geothermal gradient of ∼51 °C/km (Sigismondi, 2013;Sigismondi & Ramos, 2009a, 2009b, the Albian-Campanian rapid cooling event implies maximum cooling rates of 12 ± 4 to 23 ± 10 °C/Ma and exhumation rates of up to ∼0.5 ± 0.2 mm/yr (see Table S4.2 for de- The location of samples is projected onto the profile maintaining their relative elevation.…”