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This paper presents a detailed tectonosedimentary and volcanic description of the Salar de Antofalla area, along with an evolutionary model of the Southern Puna during the Cenozoic. Cenozoic sedimentation started during the Late Eocene at the climax of the Incaic phase in the Chilean Precordillera. Both playa mud and sandflat as well as fluvial sediments (Quinoas Formation) of this time are interpreted...