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Late Miocene ignimbrites at the southern Puna-northern Sierras Pampeanas border (~27°S): Stratigraphic correlation
(Elsevier, 2015-10)
New field observations and petrographic and geochemical data of pyroclastic deposits exposed along the Las Papas valley (border between southern Puna and northern Sierras Pampeanas, Argentina) and further north, lead us ...
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 ...
Miocene to Recent collapse calderas of the southern and central volcanic zones of the Andes and their tectonic constraints
(Springer, 2021-01-30)
Central (18–28° S) and Southern (33–46° S) Andean Volcanic Zones (CVZ and SVZ, respectively) have several Miocene to Recent collapse calderas. We compare their characteristics based on published data to identify how the ...
The flow dynamics of an extremely large volume pyroclastic flow, the 2.08-Ma Cerro Galán Ignimbrite, NW Argentina, and comparison with other flow types
(Springer Verlag Berlín, 2011-12)
The 2.08-Ma Cerro Galán Ignimbrite (CGI) represents a >630-km3 dense rock equivalent (VEI 8) eruption from the long-lived Cerro Galán magma system (∼6 Ma). It is a crystal-rich (35–60%), pumice (<10% generally) and lithic-poor ...
Dynamics of caldera collapse during the Coranzulí eruption (6.6 Ma) (Central Andes, Argentina)
(Elsevier Science, 2019-04)
The Coranzulí caldera (23°00′ S ? 66°15′ W) is one of the least known caldera complexes in the eastern part of the Argentinian Altiplano-Puna plateau (Central Andes). It lies at the intersection of N S, NW-SE and NE-SW ...
La Peligrosa caldera (47° 15'S, 71° 40'W): A key event during the Jurassic ignimbrite flare-up in Southern Patagonia, Argentina
(Elsevier Science, 2014-01)
Pyroclastic and lava vent-facies, from the Late Jurassic El Quemado Complex, are described at the southern Lake Ghío, in the Cordillera Patagónica Austral. Based on the comprehensive study of lithology and structures, the ...
The Cerro Aguas Calientes caldera, NW Argentina: An example of a tectonically controlled, polygenetic collapse caldera, and its regional significance
(Elsevier Science, 2010-07)
Polygenetic, silicic collapse calderas are common in the central Andes. Here we describe in detail the Cerro Aguas Calientes caldera in NW Argentina, which comprises two caldera-forming episodes that occurred at 17.15. Ma ...
Primary Pyroclastic Flow Deposits: Characterization and a Case Study in the Neoproterozoic Acid Volcanism of the Sul-rio-grandense ShieldDepósitos de Fluxo Piroclástico Primários: Caracterização e Estudo de um Caso no Vulcanismo Ácido Neoproterozóico do Escudo Sul-rio-grandense
(Instituto de Geociências /Universidade Federal do Rio Grande do Sul, 2003)