Shrimp zircon geochronology constrains on Permian pyroclastic levels, Claromecó Basin, South West margin of Gondwana, Argentina - Arzadún, Guadalupe; Tomezzoli, Renata; Trindade, Ricardo Ivan Ferreira da; Gallo, Leandro C; Cesaretti, Nora N; Calvagno, Juan M (Journal of South American Earth Sciences, 2018)