"Volcán Copiapó in Atacama province SW of Nevados Ojos del Salado volcano is a dominantly Miocene-Pliocene stratovolcano. Eight andesitic pyroclastic cones are located primarily on the SE flank of the 6052-m-high volcano. The most recent cone, Volcán San Román, lies 7 km north of Copiapó and was considered to be of probable Pleistocene age, related to late-stage reactivation of Pleistocene-Holocene fissures cutting the Ojos del Salado region (González-Ferrán, 1995). The dacitic-to-andesitic Copiapó volcano was reported by Von Wolff (1929) to display solfataric activity."  -Smithsonian Volcano Archive
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