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The origin of an unusual tuff ring of perlitic rhyolite pyroclasts: The last explosive phase of the Ramadas Volcanic Centre, Andean Puna, Salta, NW Argentina

VolcanologyEngineeringVolcanismGeologyUnusual Tuff RingGeochemistryIgneous ProcessGeochronologyLast Explosive PhasePetrologyPyroclastic FlowNw ArgentinaTectonics