A 25 myr chronostratigraphy of ignimbrites in south Peru: implications for the volcanic history of the Central Andes Jean-Claude Thouret Brian R. Jicha Jean-Louis Paquette Evren H. Cubukcu 10.6084/m9.figshare.3187012.v1 https://geolsoc.figshare.com/articles/journal_contribution/A_25_myr_chronostratigraphy_of_ignimbrites_in_south_Peru_implications_for_the_volcanic_history_of_the_Central_Andes/3187012 SD Fig. 2. U-Pb zircon diagrams 2016-04-20 10:16:36 Central Andes SD Fig ignimbrite zircon diagram implication 25 myr chronostratigraphy 2. Geology