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Parinacota Volcano
Parinacota is a massive stratovolcano on the border of Chile and Bolivia. It is part of the Nevados de Payachata group of volcanoes. The other major edifice in that group is the Pleistocene peak of Pomerape. Parinacota's last eruptive phase has been dated using the helium surface exposure technique, which ties the eruption to 290AD 300 years.
One of the most dramatic eruptive events in the volcano's past was 8000 years ago, when a major collapse of the edifice produced 6km debris avalanche. That avalanche blocked drainage patterns in some of the local area, creating Chungara Lake.
The volcano and Pomerape straddle the border between Sajama National Park (Bolivia) and Lauca National Park (Chile).
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article Parinacota Volcano
