BECAS
QUIROGA CARRASCO Rodrigo Adolfo
congresos y reuniones científicas
Título:
Facies analysis of an Eocene to Lower Miocene phreatomagmatic volcanic field in the Andes of Central Chile
Autor/es:
JORGE CLAVERO; BARBARA DROGUETT; RODRIGO QUIROGA
Lugar:
Montreal
Reunión:
Congreso; 27th IUGG General Assembly; 2019
Institución organizadora:
The International Union of Geodesy and Geophysics (IUGG)
Resumen:
The Abanico Formation represents the products of the Eocene-Lower Miocene syn-extensional volcanism inthe Andean range. Here we present the first evidences of phreatomagmatic volcanism within that period inthe cordillera of central Chile. At least six maar structures, aligned EW and NS, crop out in the El Manzanoarea, located 50 km SE of Santiago. The phreatomagmatic rocks that form the maars correspond tomassive medium-to-coarse grained pyroclastic breccias, both lithic and pumice-rich, surrounded by fine-tomediumgrained lapilli tuffs and ash tuffs with variable dips from gentle (
