Lomas Blancas

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 36.286°S
  • 71.009°W

  • 2268 m
    7439 ft

  • 357064
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Lomas Blancas.

The Global Volcanism Program has no Weekly Reports available for Lomas Blancas.

The Global Volcanism Program has no Bulletin Reports available for Lomas Blancas.

Volcano Types


Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Rock Types

Basalt / Picro-Basalt
Andesite / Basaltic Andesite


Within 5 km
Within 10 km
Within 30 km
Within 100 km

Geological Summary

Volcán Lomas Blancas is a small shield-like stratovolcano of late-Pleistocene to Holocene age (Moreno and Naranjo, 1991) located about 15 km SE of Nevado de Longaví volcano. A 2.3-km-wide caldera, possibly formed by edifice collapse, is open to the SE. Basaltic-andesite aa lava flows extend 7 km from the collapse scarp. The basaltic central cone rises about 500 m to an elevation of 2268 m. Much of the volcano is covered by pumice deposits that probably originated from Nevado de Longaví.

The Global Volcanism Program is not aware of any Holocene eruptions from Lomas Blancas. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Lomas Blancas page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


Negra, Sierra

Photo Gallery

The small light-brown area at the center of this NASA International Space Station image (with north to the bottom right) is Volcán Lomas Blancas. This small shield-like 2268-m-high stratovolcano of late-Pleistocene to Holocene age is located about 15 km SE of snow-capped Nevado de Longaví volcano (right-center). A 2.3-km-wide caldera, possibly formed by edifice collapse, can been seen opening to the SE. Pumice deposits probably originating from Nevado de Longaví blanket the volcano. The crescent-shaped lake at the upper left is Laguna del Dial.

NASA Space Station image ISS008-E-7432, 2003 (http://eol.jsc.nasa.gov/).


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Gonzalez-Ferran O, 1995. Volcanes de Chile. Santiago: Instituto Geografico Militar, 635 p.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Moreno H, Naranjo J A, 1991. The southern Andes volcanoes (33°-41° 30' S), Chile. 6th Geol Cong Chile, Excur PC-3, 26 p.

Affiliated Databases

Large Eruptions of Lomas Blancas Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.