Buscar
Mostrando ítems 11-20 de 85
Compositional variations and magma mixing in the 1991 eruptions of Hudson volcano, Chile
(Springer, 2009-12)
The August 1991 eruptions of Hudson volcano produced ∼2.7 km3 (dense rock equivalent, DRE) of basaltic to trachyandesitic pyroclastic deposits, making it one of the largest historical eruptions in South America. Phase 1 ...
Explosive style, magma degassing and evolution in the Chaimilla eruption, Villarrica volcano, Southern Andes
(CIENCIAS, 2015)
Villarrica (Chile) is a basaltic stratovolcano, currently in an open-conduit condition. It now has relatively frequent Strombolian and effusive eruptions, but it had large explosive eruptions in prehistoric times. Among ...
Change of eruptive style during Pliocene deglaciation: from scoria cones to lava shields in southern extra-Andean Patagonia, Argentina
(Springer, 2021-06)
Slab window basalt cycles in extra-Andean Patagonia formed in a main-plateau and a post-plateau stage, during glacial and interglacial events. Here, we provide field, geochemical and geochronological data of Pliocene basalts ...
Monitoring volcanic thermal anomalies from space: Size matters
(Elsevier Science BvAmsterdamHolanda, 2011)
Mantle heterogeneity controls on small-volume basaltic volcanism
(Geological Soc Amer, 2015)
Eruptions of basaltic material in small-scale volcanic fields located in intraplate settings display a very diverse range in physical and chemical characteristics. Despite its relevance to the understanding of volcanic ...
Volcanic lightning and plume behavior reveal evolving hazards during the April 2015 eruption of Calbuco volcano, Chile
(Amer Geophysical Union, 2016)
Soon after the onset of an eruption, model forecasts of ash dispersal are used to mitigate the hazards to aircraft, infrastructure, and communities downwind. However, it is a significant challenge to constrain the model ...
Polycyclic scoria cones of the Antofagasta de la Sierra basin, Southern Puna plateau, Argentina
(Edinburgh Scottish Academy, 2017-06)
Despite a number of published papers focusing on the geodynamic implications of the recent Southern Puna mafic magmatism, there have been fewer studies of the volcanology and stratigraphy of this outstanding volcanism. ...
Silicic conduits as supersized tuffisites: Clastogenic influences on shifting eruption styles at Cordón Caulle volcano (Chile)
(Springer, 2021-01)
Understanding the processes that drive explosive-effusive transitions during large silicic eruptions is crucial to hazard mitigation. Conduit models usually treat magma ascent and degassing as a gradual, unidirectional ...