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| Sabancaya |

On 10 May Instituto Geofísico de Perú (IGP) reported that results of an interferogram of Sabancaya provided by a collaborator at Cornell University showed that an area of deformation (subsidence of 7 cm centered at 6 km NE of the crater) was coincident with the main area of seismicity. Volcano-tectonic (VT) earthquakes continued to dominate the seismic signals, although long-period (LP) events continued to be detected. There was also an increase of hybrid events. On 10 May a M 4 VT event occurred 15 km W and fumarolic activity increased, with plumes rising 1.2 km high.
8 May 2013
Back to Top3 April 2013
Back to Top27 March 2013
Back to Top13 March 2013
Back to Top20 February 2013
Back to TopBelow is a summary of eruption dates and Volcanic Explosivity Indices (VEI).
The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.
de Silva S L, Francis P W, 1990. Potentially active volcanoes of Peru - observations using Landsat Thematic Mapper and Space Shuttle imagery. {Bull Volc}, 52: 286-301
de Silva S L, Francis P W, 1991. {Volcanoes of the Central Andes}. Berlin: Springer-Verlag, 216 p
Gerbe M-C, Thouret J-C, 2004. Role of magma mixing in the petrogenesis of tephra erupted during the 1990-98 explosive activity of Nevado Sabancaya, southern Peru. {Bull Volc}, 66: 541-561
Gonzalez-Ferran O, 1995. {Volcanes de Chile}. Santiago: Instituto Geografico Militar, 635 p
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. {IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior}.
Katsui Y (ed), 1971. List of the World Active Volcanoes. {Volc Soc Japan draft ms}, (limited circulation), 160 p
Klinck B A, Ellison R A, Hawkins M P, 1986. The geology of the Cordillera Occidental and Altiplano west of Lake Titicaca southern Peru. {Brit Geol Surv Open-File Rpt}, 353 p
Parodi-I A, 1975. Volcanes del Peru. {Soc Geog Lima Bull}, 94: 20-23
Pritchard M, Simons M, 2002. A satellite geodetic survey of large-scale deformation of volcanic centres in the Central Andes. {Nature}, 418: 167-170
Thouret J-C, Juvigne E, Marino J, Moscol M, Legeley-Padovani A, Loutsch I, Davila J, Lamadon S, Rivera M, 2002. Late Pleistocene and Holocene tephro-stratigraphy and chronology in southern Peru. {Bol Soc Geol Peru}, 93: 45-61
Sabancaya, located on the saddle between 6288-m-high Ampato and 6025-m-high 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 volcanoes, Nevado Hualca Hualca, is of probable late-Pliocene to early Pleistocene age. Both Nevado Ampato and Nevado Sabancaya are only slightly affected by glacial erosion and consist of a series of lava domes aligned along a NW-SW trend. The name of 5967-m-high Sabancaya (meaning "tongue of fire" in the Quechua Indian language) first appeared in records in 1595 AD, 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 of Sabancaya date back to 1750.