Por favor, use este identificador para citar o enlazar este ítem: http://repositorio.ingemmet.gob.pe/handle/ingemmet/1324
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
abr-2018
Territoires;n° 1
Hazard and risk mapping : The Arequipa - El Misti case study and other threatened cities, 2018
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.
Presses universitaires Blaise Pascal
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.

Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Manrique-Actividad_del_volcan_Sabancaya...2016-2017.pdf586,7 kBAdobe PDFVisualizar/Abrir


Este ítem está sujeto a una licencia Creative Commons Licencia Creative Commons Creative Commons