Olca
Sign in to saveOlca 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.
In the Vinony graph
Vinony's link graph records 17 inbound references to Olca, and connects out to San Pedro de Quemes Municipality, Chile and Bolivia.
The entry is geolocated on the map in mountain_region, across 3 mapped points.
Vinony files it under Bolivia–Chile border, Holocene stratovolcanoes and International mountains of South America.
Vinony links it to 20 Wikipedia language editions.
Key facts
- Mountain.name
- Olca
- Mountain.photo
- Cerro Aucanquilcha, Chile, 2016-02-10, DD 15.JPG
- Mountain.elevation_m
- 5,407
- Mountain.map
- Chile
- Mountain.range
- Andes
- Mountain.type
- Stratovolcano
- Mountain.last_eruption
- 1867
- Mountain.map_size
- 260px
- Mountain.subdivision1
- Bolivia, Nor Lípez Province, San Pedro de Quemes Municipality, Cana Canton Chile, Antofagasta Region, El Loa Province
- Mountain.subdivision1_type
- Location
via Wikipedia infobox
Wikidata facts
- Instance of
- mountain
- Country
- Bolivia
- Located in
- Nor Lípez Province
- Continent
- Americas
- Elevation
- 5705
- Material used
- andesite
- Image
- Cerro Aucanquilcha, Chile, 2016-02-10, DD 15.JPG
Show 2 more facts
- volcano observatory
- Southern Andean Volcano Observatory
- mountain range
- Cordillera Occidental
Sources (1)
via Wikidata · CC0
~3 min read
Encyclopedic overview
6 sectionsContents
- Gas emissions and composition
- Eruptive history and latest activity
- See also
- References
- Sources
- External links
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.
== Gas emissions and composition == The gasses emission is comprised by a single warm spring at the base and a persistent fumarole field over at the crater's dome for at least 60 years. The fumarolic field is about 0.1 km2 and the emissions measured in situ at the crater show a highly mixed magmatic system between high temperature gasses and hydrothermal fluids.
Excerpted from Wikipedia’s “Olca” article, available under the CC BY-SA 4.0 licence.
Gallery (2)
On the map
3 mapped locations