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.

Olca
Cerro Aucanquilcha, Chile, 2016-02-10, DD 15.JPG
Highest point
Elevation5,407 m (17,740 ft)
Coordinates20°56′0″S 68°29′0″W / 20.93333°S 68.48333°W / -20.93333; -68.48333
Geography
LocationBolivia, Potosí Department, Nor Lípez Province, San Pedro de Quemes Municipality, Cana Canton
Chile, Antofagasta Region, El Loa Province
Parent rangeAndes
Geology
Mountain typeStratovolcano
Last eruption1867

See alsoEdit

SourcesEdit

  • "Olca-Paruma". Global Volcanism Program. Smithsonian Institution.

External linksEdit