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Cayutue-La Vigueria

Volcanic field · Chile · 506m

The major regional N-S-trending Liquiñe-Ofqui fault extends along the Estuario Reloncaví (lower right) through Ralún Bay (center) to Lake Cayutúe (just left of the top of the image). About 20 basaltic cinder cones, maars, and lava flows of the Cayutué-La Viguería volcanic field lie along this lineament. La Viguería and Volcán Cayutué are the principal cones. The former temporarily dammed the Río Petrohué, the meandering stream at the left.
The major regional N-S-trending Liquiñe-Ofqui fault extends along the Estuario Reloncaví (lower right) through Ralún Bay (center) to Lake Cayutúe (just left of the top of the image). About 20 basaltic cinder cones, maars, and lava flows of the Cayutué-La Viguería volcanic field lie along this lineament. La Viguería and Volcán Cayutué are the principal cones. The former temporarily dammed the Río Petrohué, the meandering stream at the left. · Photo: NASA International Space Station image ISS006-E-42993, 2003 (http://eol.jsc.nasa.gov/).
Type
Volcanic field
Country
Chile
Region
South America Volcanic Regions / Southern Andean Volcanic Arc
Elevation
506m
Coordinates
-41.300, -72.270
Last eruption
-190
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Cluster
Major rock type
Basalt / Picro-Basalt
Geological summary

The Cayutué-La Viguería volcanic field consists of about 20 basaltic maars and cinder cones of Holocene age along the N-S-trending Liquiñe-Ofqui fault zone. The field occupies a low-lying area between the southern end of Ensenada Cayutué (the southern extension of Lake Todos los Santos) and the northern end of the Estuario Reloncaví. La Viguería and Volcán Cayutué are the principal cones. Formation of La Viguería and associated lava flows temporarily dammed the Río Petrohué about 3,000 years ago, forming an ephemeral lake that was filled with deposits from Calbuco and Osorno volcanoes. Pyroclastic cones and lava flows filled the Ensenada de Cayutué depression, separating Lake Todos los Santos from Ralún Bay.

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
190 BCE~190 BCE · 1 eruptions · max VEI ?190 BCE190 BCE189 BCE189 BCE189 BCE

Detailed timeline

  1. 190 BCE (±190 yrs)VEI ?Geological estimate
    BCE 190 – Ongoing
    La Viguería

External links

⚠ For reference only. Not for emergency response.