Geological Evolution of Paniri Volcano, Central Andes, Northern
Journal of South American Earth Sciences 84 (2018) 184–200 Contents lists available at ScienceDirect Journal of South American Earth Sciences journal homepage: www.elsevier.com/locate/jsames Geological evolution of Paniri volcano, Central Andes, northern Chile T ∗ Benigno Godoya, , José Lazcanob,1, Inés Rodríguezc, Paula Martíneza,2, Miguel Angel Paradaa, Petrus Le Rouxd, Hans-Gerhard Wilkeb, Edmundo Polancoe,3 a Departamento de Geología y Centro de Excelencia en Geotermia de los Andes (CEGA), Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile b Departamento de Ciencias Geológicas, Facultad de Ingeniería y Ciencias Geológicas, Universidad Católica del Norte. Avenida Angamos 0610, Antofagasta, Chile c Red Nacional de Vigilancia Volcánica, Servicio Nacional de Geología y Minería, Avenida Santa María 0104, Providencia, Santiago, Chile d Department of Geological Sciences, University of Cape Town, Rondebosch 7701, South Africa e Energía Andina S.A., Cerro El Plomo 5630, Las Condes, Santiago, Chile ARTICLE INFO ABSTRACT Keywords: Paniri volcano, in northern Chile, belongs to a volcanic chain trending across the main orientation of the Central Central Andes Andean volcanic province. Field work mapping, stratigraphic sequences, and one new 40Ar/39Ar and eleven Paniri volcano previous published 40Ar/39Ar, and K/Ar ages, indicate that the evolution of Paniri involved eruption of seven AFC-Like evolution volcanic units (Malku, Los Gordos, Las Lenguas, Las Negras, Viscacha, Laguna, and Llareta) during four main Plagioclase fractionation stages occurring over more than 1 Myr: Plateau Shield (> 800 ka); Main Edifice (800–400 ka); Old Cone Physical volcanology (400–250 ka); and New Cone (250–100 ka).
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