Cerro Chela

Chela
Chela is located in Chile
Chela
Chela
Highest point
Elevation5,644 m (18,517 ft)[1]
Coordinates21°24′S 68°30′W / 21.400°S 68.500°W / -21.400; -68.500[1]
Geography
LocationChile

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] and moraines formed on the northern, western and southern flanks. Perhaps volcanically pre-formed cirques also developed.[4]

Cerro Chela is located south of Aucanquilcha, from which it is separated by the Portezuelo Puquíos.[5] It forms a lineament with Cerro Carcote, Cerro Palpana, Miño Volcano and Volcan Las Cuevas that is oriented north-south.[2]

References

  1. ^ a b c d Reutter, Klaus-Joachim; Scheuber, Ekkehard; Wigger, Peter J., eds. (1994). "Large- and Fine-Scale Geochemical Variations Along the Andean Arc of Northern Chile (17.5°– 22°S)". Tectonics of the Southern Central Andes Structure and Evolution of an Active Continental Margin. Berlin, Heidelberg: Springer Berlin Heidelberg. p. 83. doi:10.1007/978-3-642-77353-2_5. ISBN 978-3-642-77353-2.
  2. ^ a b 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. 27 (2): 205–240. ISSN 0716-0208. Retrieved 23 September 2015.
  3. ^ Singh, R.B., ed. (1992). Dynamics of mountain geosystems. New Delhi: Ashish Pub. House. p. 165. ISBN 978-81-7024-472-1. Retrieved 23 September 2015.
  4. ^ Jenny, Bettina; Kammer, Klaus (1996). Climate Change in den trockenen Anden (in German). Verlag des Geographischen Institutes der Universität Bern. p. 51. ISBN 3906151034.
  5. ^ 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 (4): 417–418. doi:10.1017/S0263593300001541. S2CID 232151465.


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