Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12544/1324
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Manrique Llerena, Nélida
Lazarte Zerpa, Ivonne Alejandra
Rivera Porras, Marco Antonio
Cueva Sandoval, Kevin Arnold
Japura Paredes, Saida Blanca
Aguilar Contreras, Rigoberto
Cordillera Occidental
Arequipa
Perú
2018-05-02T21:58:10Z
2018-05-02T21:58:10Z
2018-04
Manrique, N.; Lazarte, I.; Rivera, M.; Cueva, K.; Japura, S. & Aguilar, R. (2018) - Actividad del volcán Sabancaya (Perú) 2016-2017: observaciones petrográficas y geoquímicas de los depósitos de tefras del 2017. En: Thouret, J.C. Hazard and risk mapping : The Arequipa - El Misti case study and other threatened cities. Clermont-Ferrand : Presses universitaires Blaise Pascal, Territoires 1, pp. 117-122.
2845166397
https://hdl.handle.net/20.500.12544/1324
From 2013 to present-day, the Sabancaya volcano has resumed a new eruptive episode that we have subdivided in two phases: the first phase was characterized by degassing; coincided with the occurrence of five fumarolic vents located on the north flank, and; the second, current phase that started on November 6, 2016, keeps producing ash emissions and ballistic ejecta from columns as high as 5500 m above the crater. Ash particles and ballistic blocks show homogeneous andesitic compositions (59.8-62.8 wt.% SiO2). The mineral association of juvenile rocks includes plagioclase, clinopyroxene, amphibole, biotite and Fe-Ti oxides. Disequilibrium textures have been observed in some phenocrysts, such as sieve texture and overgrowth rim in plagioclase and reaction rims in amphiboles. We attribute these characteristics to a probable recharge process involving a batch of hot mafic magma ascending into the reservoir.
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Presses universitaires Blaise Pascal
Hazard and risk mapping : The Arequipa - El Misti case study and other threatened cities, 2018
Territoires;n° 1
info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
Repositorio Institucional INGEMMET
Instituto Geológico, Minero y Metalúrgico – INGEMMET
Erupciones volcánicas
Ceniza volcánica
Piroclastos
Tefra
Peligros volcánicos
Volcanes
Volcán Sabancaya
Ash emission
Tephra
Hazard
Sabancaya volcano
Actividad del volcán Sabancaya (Perú) 2016-2017: observaciones petrográficas y geoquímicas de los depósitos de tefras del 2017
The 2016-2017 activity of the Sabancaya volcano (Peru): petrographical and geochemical observations of the 2017 tephra deposits
Activité du volcan Sabancaya (Pérou) en 2016 et 2017 : observations pétrographiques et géochimiques des dépôts de téphras de 2017
info:eu-repo/semantics/conferenceObject
Vulcanología
Francia

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