Olca

Olca
Elevation	5,407 m (17,740 ft)
Location
Location	Bolivia Bolivia Potosí Department, Nor Lípez Province, San Pedro de Quemes Municipality, Cana Canton  Chile Antofagasta Region, El Loa Province
Range	Andes
Coordinates	20°56′0″S 68°29′0″W / 20.933333°S 68.483333°W / -20.933333; -68.483333
Geology
Type	Stratovolcano
Last eruption	1867

Olca is a stratovolcano on the border of Chile and Bolivia. It lies in the middle of a 15 km long ridge composed of several stratovolcanos. Cerro Minchincha lies to the west and Paruma to the east. It is also close to the pre-Holocene Cerro Paruma. It is andesitic and dacitic in composition, with lava flows extending several kilometres north of the peak. The only activity from the ridge during historical times was a flank eruption from 1865 to 1867. The exact source of this eruption is unclear.

See also

• Ollagüe
• List of volcanoes in Bolivia
• List of volcanoes in Chile

Sources

• "Olca-Paruma". Global Volcanism Program, Smithsonian Institution. http://www.volcano.si.edu/world/volcano.cfm?vnum=1505-05=. 

External links

• Population data and map of San Pedro de Quemes Municipality