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Report on Sabancaya (Peru) — 7 September-13 September 2016

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 7 September-13 September 2016
Managing Editor: Sally Kuhn Sennert

Please cite this report as:

Global Volcanism Program, 2016. Report on Sabancaya (Peru). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 7 September-13 September 2016. Smithsonian Institution and US Geological Survey.

Volcano Profile |  Weekly Report (7 September-13 September 2016)


Sabancaya

Peru

15.787°S, 71.857°W; summit elev. 5960 m

All times are local (unless otherwise noted)


Observatorio Vulcanol├│gico del INGEMMET (OVI) reported that during a field inspection of Sabancaya on 25 August scientists noted five new fumarolic areas; two were located in the N part of the summit area, and three were on the NE flank. The number of hybrid earthquakes increased during 25-27 August. A small explosion at 0651 on 27 August produced a dense ash plume that rose 1 km above the crater and drifted E.

Geologic Background. Sabancaya, located in the saddle NE of Ampato and SE of Hualca Hualca volcanoes, is the youngest of these volcanic centers and the only one to have erupted in historical time. The oldest of the three, Nevado Hualca Hualca, is of probable late-Pliocene to early Pleistocene age. The name Sabancaya (meaning "tongue of fire" in the Quechua language) first appeared in records in 1595 CE, suggesting activity prior to that date. Holocene activity has consisted of Plinian eruptions followed by emission of voluminous andesitic and dacitic lava flows, which form an extensive apron around the volcano on all sides but the south. Records of historical eruptions date back to 1750.

Source: Observatorio Vulcanol├│gico del INGEMMET (OVI)