The Chungará Andesites have a volume of over ; material from these stages was incorporated in the collapse deposit. Pomerape volcano developed during this time as well. This and the long delay between the eruption of the Chungará Andesites and the rest of the volcano's history may imply that the magmatic systems involved were different. Magma output during the early stage was low, with a magma output of with the dome growth contributing .