Copiapó (volcano)

Copiapó
Azufre

Maricunga Salt Flat with Copiapó Volcano in the distance.
Highest point
Elevation 6,052 m (19,856 ft) [1]
Prominence 1,701 m (5,581 ft) [1]
Listing Ultra
Coordinates 27°18′21″S 69°07′51″W / 27.30583°S 69.13083°W / -27.30583; -69.13083Coordinates: 27°18′21″S 69°07′51″W / 27.30583°S 69.13083°W / -27.30583; -69.13083 [1]
Geography
Copiapó
Parent range Andes
Geology
Mountain type Stratovolcano
Last eruption Unknown

Copiapó, also known as Azufre, is a stratovolcano located in the Atacama Region of Chile. The volcano separates the two portions in which Nevado Tres Cruces National Park is divided. In its vicinity lies Ojos del Salado. At its summit an Inca platform can be found.[2]

Dacitic volcanism occurred at this centre 11-7 million years ago and covered a surface of 200 square kilometres (77 sq mi). The Valle Ancho fault can be traced beneath this volcano. The main cone is formed by dacites and block-and-ash flows that were later intruded by dacitic porphyries, associated with hydrothermal alteration. A smaller centre formed on the northern side of the main cone, as well as thick (100–300 metres (330–980 ft)) ignimbrites in two units. A complex of lava domes lies at their southern-eastern end with more hydrothermally altered porphyric intrusions named Azufrera de Copiapo. The last activity 6-7 million years ago formed a shield overlying the lava dome complex and the San Roman dome.[3] Obsidian from this volcanic area has been found in archeological sites.[4]

See also

References

  1. 1 2 3 "Argentina and Chile North: Ultra-Prominences" Peaklist.org. Retrieved 2013-02-25.
  2. ↑ Echevarria, Evelio (2014). "Summit Archaeology" (PDF). The Alpine Journal: 193. Retrieved 28 January 2016.
  3. ↑ Kay, Suzanne Mahlburg; Mpodozis, Constantino; Tittler, Andrew; Cornejo, Paula (December 1994). "Tertiary Magmatic Evolution of the Maricunga Mineral Belt in Chile". International Geology Review. 36 (12): 1079–1112. doi:10.1080/00206819409465506.
  4. ↑ Seelenfreund, Andrea; Miranda, Javier; Dinator, María Inés; Morales, J. Roberto (December 2005). "CARACTERIZACIÓN DE OBSIDIANAS DEL NORTE Y CENTRO SUR DE CHILE MEDIANTE ANÁLISIS DE FLUORESCENCIA DE RAYOS X". Chungará (Arica) (in Spanish). 37 (2). doi:10.4067/S0717-73562005000200009.

Sources


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