"Andean Volcanic Belt#Northern Volcanic Zone" . . "volcanic zones of the Andes" . . . . . "Andean Volcanic Belt#Central Volcanic Zone" . "Northern Volcanic Zone" . . "Central Volcanic Zone" . . . . "Andean Volcanic Belt#Volcanic gaps" . . . . "Andes chain" . "Andean Volcanic Belt" . . . . . "Andean volcanic belt" . "Andean Volcanic Belt#Southern Volcanic Zone" . "Andes" . . "Andean-type" . "arc volcanism" . . "Volcanism in the Chilean Andes" . "Andean Volcaninc Belt (Central Part)" . . . . "Inca Plateau" . . "Andean volcanoes" . . "Southern Volcanic Zone" . . "Austral Volcanic Zone" . . "Andean Volcanic Belt" . . "volcanic section" . "volcanic belts in the Andes" . "South Volcanic Zone" . "Quaternary Andean volcanoes" . . "Andean" . . . "volcanism in the Andes" . "Andes Central Volcanic Zone" . "four separate regions" . . .