Cerro Chela

Chela
Chela
Highest point
Elevation 5,644 metres (18,517 ft) [1]
Coordinates 21°24′S 68°30′W / 21.400°S 68.500°W / -21.400; -68.500Coordinates: 21°24′S 68°30′W / 21.400°S 68.500°W / -21.400; -68.500 [1]

Chela is a volcano in Chile that was active between 3.75±0.5 and 4.11±0.25 million years ago. It is constructed on top of the 5.4±0.3 million years old rhyolitic Carcote ignimbrite. Its eruption products are mafic andesites.[1][2] The volcano was degraded by glaciation but radial ridges and red-gray rocks as well as the uniform slopes indicate that it was a symmetric stratovolcano.[1] The Pleistocene snow line was located at 4,800 metres (15,700 ft) altitude.[3]

Cerro Chela is located south of Aucanquilcha, from which it is separated by the Portezuelo Puquíos.[4] It forms a lineament with Cerro Carcote, Cerro Palpana, Miño Volcano and Volcan Las Cuevas that is oriented north-south.[2]

References

  1. 1 2 3 4 Wigger, edited by Klaus-Joachim Reutter, Ekkehard Scheuber, Peter J. (1994). Tectonics of the Southern Central Andes Structure and Evolution of an Active Continental Margin. Berlin, Heidelberg: Springer Berlin Heidelberg. p. 83. ISBN 978-3-642-77353-2. Retrieved 23 September 2015.
  2. 1 2 Wörner, Gerhard; Hammerschmidt, Konrad; Henjes-Kunst, Friedhelm; Lezaun, Judith; Wilke, Hans (December 2000). "Geochronology (40Ar/39Ar, K-Ar and He-exposure ages) of Cenozoic magmatic rocks from Northern Chile (18-22°S): implications for magmatism and tectonic evolution of the central Andes". Revista Geológica de Chile. Santiago: SciELO. 27 (2): 205–240. doi:10.4067/S0716-02082000000200004. ISSN 0716-0208. Retrieved 23 September 2015.
  3. ↑ Singh, [edited by] R.B. (1992). Dynamics of mountain geosystems. New Delhi: Ashish Pub. House. p. 165. ISBN 978-81-7024-472-1. Retrieved 23 September 2015.
  4. ↑ Grunder, Anita L.; Klemetti, Erik W.; Feeley, Todd C.; McKee, Claire M. (12 August 2008). "Eleven million years of arc volcanism at the Aucanquilcha Volcanic Cluster, northern Chilean Andes: implications for the life span and emplacement of plutons". Transactions of the Royal Society of Edinburgh: Earth Sciences. 97 (04): 417–418. doi:10.1017/S0263593300001541. Retrieved 23 September 2015.


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