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Arsenic-bearing phases in South Andean volcanic ashes: Implications for As mobility in aquatic environments
(Elsevier Science, 2015-01)
Three samples of volcanic ashes collected after eruptions of the volcanos Hudson in 1991, Chaitén in 2008 and Puyehue in 2011 were analyzed in order to define the solid speciation of arsenic and the dynamics of its release ...
The lifecycle of volcanic ash: advances and ongoing challenges
(Springer, 2022-05)
Explosive volcanic eruptions can produce vast amounts of volcanic ash made up mainly of fragments of magmatic glass, country rock and minerals<2 mm in size. Ash particles forming from magma fragmentation are generated by ...
Fission-track dating of South American natural glasses: an overview
(Elsevier B.V., 2005-12-01)
Although many glass-bearing horizons can be found in South American volcanic complexes or sedimentary series, only a relatively few tephra and obsidian-bearing volcanic fields have been studied using the fission-track (FT) ...
Fission-track dating of South American natural glasses: an overview
(Elsevier B.V., 2005-12-01)
Although many glass-bearing horizons can be found in South American volcanic complexes or sedimentary series, only a relatively few tephra and obsidian-bearing volcanic fields have been studied using the fission-track (FT) ...
An 18,000 year-long eruptive record from Volcán Chaitén, northwestern Patagonia: Paleoenvironmental and hazard-assessment implications
(Elsevier, 2017)
The 2008 eruption of Volc an Chait en (VCha) in northwestern Patagonia was the first explosive rhyolitic
eruption to have occurred within a century and provided an unprecedented scientific opportunity to
examine all ...
The procurement and use of knappable glassy volcanic raw material from the late Pleistocene Pilauco site, Chilean Northwestern Patagonia
(2019)
In this study we used a multidisciplinary approach, coupling morphological, geological, geochemical, and statistical analyses to investigate the provenance of rhyodacitic and dacitic glass knapped at the Pilauco site ...
A past-millennium maximum in postglacial activity from Volcán Chaitén, southern Chile
(Geological Society Of America, 2014-11)
Volcán Chaitén (southern Chile, ∼43°S) initiated an historically unprecedented eruption in A.D. 2008, surprising the local inhabitants, Chilean and Argentine authorities, and the geologic community. Available data at the ...
Evolution of the Taupo Volcanic Center, New Zealand: petrological and thermal constraints from the Omega dacite
(Springer, 2013)
The 20 ka *0.1 km3 Omega dacite, which
erupted shortly after the 26.5 ka Oruanui super-eruption,
compositionally stands out among Taupo Volcanic Zone
(TVZ) magmas, which are overwhelmingly characterized
by rhyolites ...
Suíte vulcânica serra da bocaina, grupo amoguijá, maciço rio apa-MS
(2010-12-01)
The Rio Apa Massif corresponds to the southeastern portion of the Amazonian Craton and crops out in the Mato Grosso do Sul State, Brazil. It is constituted by rocks of paleoproterozoic age of Rio Apa Complex, Alto Tererê ...
Suíte vulcânica serra da bocaina, grupo amoguijá, maciço rio apa-MS
(2010-12-01)
The Rio Apa Massif corresponds to the southeastern portion of the Amazonian Craton and crops out in the Mato Grosso do Sul State, Brazil. It is constituted by rocks of paleoproterozoic age of Rio Apa Complex, Alto Tererê ...