The historical (218 ± 14 aBP) explosive eruption of Tutupaca volcano (Southern Peru)

Samaniego, Pablo
Valderrama, Patricio
Mariño, Jersy
van Wyk de Vries, Benjamin
Roche, Olivier
Manrique, Nélida
Chédeville, Corentin
Liorzou, Céline, C.
Fidel, Lionel
Malnati, Judicaëlle

Open link

Publication date

January 2015

DOI

10.1007/s00445-015-0937-8

Publisher

Springer Verlag

Abstract

International audienceThe little known Tutupaca volcano (17° 01′ S, 70° 21′ W), located at the southern end of the Peruvian arc, is a dacitic dome complex that experienced a large explosive eruption during historical times. Based on historic chronicles and our radiometric data, this eruption occurred 218 ± 14 aBP, probably between 1787 and 1802 AD. This eruption was characterised by a large sector collapse that triggered a small debris avalanche (<1 km3) and an associated pyroclastic eruption whose bulk volume was 6.5–7.5 × 107 m3. Both units were emplaced synchronously and spread onto the plain situated to the northeast of Tutupaca volcano. The spatial and temporal relationship between the debris avalanche and the pyroclastic density curre...