Sierra Velluda

Sierra Velluda is a massive Pleistocene stratovolcano located immediately southwest of the Antuco Volcano, in the Bío Bío Region of Chile. The heavily glaciated mountain has two main summits and is the tallest mountain in Laguna del Laja National Park.

Sierra Velluda
South-southwest face of Sierra Velluda. Antuco Volcano and Domuyo are visible in the upper-left portion of the image.
Highest point
Elevation	3,585 m (11,762 ft)[1]
Prominence	1,784 m (5,853 ft)[2]
Listing	Ultra
Coordinates	37°27′48″S 71°24′57″W[2]
Geography
Sierra Velluda Chile
Parent range	Andes

Sierra Velluda was formed in two stages. The first stage occurred 495,000 years ago and is formed by about 1.5 kilometres (0.93 mi) of breccia and lava flows, with sporadic pyroclastic flows. The second is dated to 381,000 years ago and is made out of 3 kilometres (1.9 mi) breccia and lava. Subsequently, glacial erosion exposed the older layers.^[3]

The ice-capped Sierra Velluda is visible in the lower part of this image.

See also

• List of Ultras of South America

References

1. USGS. "P 1386-I Chile and Argentina - Wet Andes: Tinguiririca Pass - Puerto Aisen". Retrieved 2007-02-04.
2. "Argentina and Chile, Central Ultra-Prominences". Peaklist.org. Retrieved 2014-08-16.
3. Melnick, Daniel; Charlet, François; Echtler, Helmut P.; De Batist, Marc (2006-10-01). "Incipient axial collapse of the Main Cordillera and strain partitioning gradient between the central and Patagonian Andes, Lago Laja, Chile". Tectonics. 25 (5): TC5004. Bibcode:2006Tecto..25.5004M. doi:10.1029/2005tc001918. ISSN 1944-9194.