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Characteristics and emplacement mechanisms of the Coranzulí ignimbrites (Central Andes)
(Elsevier Science, 2020-07-15)
We present a detailed stratigraphy of the Coranzulí caldera-forming deposits. This caldera, located in the Altiplano-Puna Volcanic Complex (Central Andes), generated four ignimbrite deposits with similar field characteristics ...
The Granada ignimbrite: A compound pyroclastic unit and its relationship with Upper Miocene caldera volcanism in the northern Puna
(PERGAMON-ELSEVIER SCIENCE LTD, 2008)
The Granada ignimbrite, an Upper Miocene volcanic unit from the northern Puna, previously has been interpreted as an extensive ignimbrite (>2300 km(2)) associated with eruptions from the Vilama caldera (trap-door event). ...
Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina
(Elsevier Science, 2007-11-15)
The Cretaceous Chubut Group in the Golfo San Jorge Basin (Patagonia, Argentina) comprises up to 6000 m of continental sediments. At the base of the succession, an extensive saline-alkaline lacustrine unit (Pozo D-129 Fm) ...
Eruptive style and flow dynamics of the pyroclastic density currents related to the Holocene Cerro Blanco eruption (Southern Puna plateau, Argentina)
(Pergamon-Elsevier Science Ltd, 2020-03)
The Pleistocene-Holocene Cerro Blanco Volcanic Complex (CBVC), one of the youngest caldera complexes in the Southern Central Andes, is the source of possibly one of largest Holocene eruptions on Earth, the 4.2 ka, Cerro ...
Arsenic in wells at the Guayabo Caldera in Northwest Costa Rica
(International Association of Volcanology and Chemistry of the Earth's Interior, 2018-09)
The Guayabo Caldera, a 14 km diameter volcanic depression with Miravalles volcano rising 2028 ma.s.l. in the norte astern side of so called, formed by repeated eruption sand multiple collapses which dis membered earlier ...
Depósito de corriente piroclástica reciente (1963-64 AD? ? 1976 AD?) del volcán Copahue (I): evidencias geológicas de campo y edad radiocarbónicaA recent pyroclastic density current (1963-64 AD? - 1976 AD?) from the Copahue volcano (I): Field geological evidences and radiocarbon age
(Asociación Geológica Argentina, 2014-03)
Se describe un depósito atribuido a una corriente piroclástica sobre los flancos NE, E y SE del volcán Copahue. La datación radiocarbónica (F = 1.3678 ±0.0075) permite asignarle dos edades eruptivas posibles 1963-64 AD y ...
A reinterpretation of pyroclastic density current deposits at Copahue volcano, Andean Southern Volcanic Zone, Argentina-Chile
(Pergamon-Elsevier Science Ltd, 2021-11)
Pyroclastic density currents (PDCs) are one of the most dangerous volcanic phenomena. The correct interpretation and mapping of PDC deposits in the volcano record is important to establish the eruptive style and play a ...