Cerro Alconcha

Coordinates: 21°04′S 68°32′W / 21.067°S 68.533°W / -21.067; -68.533[1] Cerro Alconcha is an andesitic volcano in the Andes. The volcano is buried by ignimbrites which on its northern side reach an altitude of 300 metres (980 ft). These ignimbrites constrain the volcano's age as older than 9.3 mya.[1]

References

  1. 1 2 Baker, M. C. W. (December 1977). "Geochronology of upper Tertiary volcanic activity in the Andes of north Chile". Geologische Rundschau. 66 (1): 455–465. doi:10.1007/BF01989588. Retrieved 24 September 2015.
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