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dc.contributor.author
Olivero, Eduardo Bernardo  
dc.contributor.author
Torres Carbonell, Pablo Juan  
dc.contributor.author
Svojtka, Martin  
dc.contributor.author
Fanning, Christopher Mark  
dc.contributor.author
Hervé, Francisco  
dc.contributor.author
Nývlt, Daniel  
dc.date.available
2021-02-26T16:58:27Z  
dc.date.issued
2020-12  
dc.identifier.citation
Olivero, Eduardo Bernardo; Torres Carbonell, Pablo Juan; Svojtka, Martin; Fanning, Christopher Mark; Hervé, Francisco; et al.; Eocene volcanism in the Fuegian Andes: Evidence from petrography and detrital zircons in marine volcaniclastic sandstones; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 104; 12-2020; 1-28  
dc.identifier.issn
0895-9811  
dc.identifier.uri
http://hdl.handle.net/11336/126806  
dc.description.abstract
The sedimentology, petrography, and U–Pb dating of two Eocene volcaniclastic horizons of the Punta Torcida and Leticia formations, Austral basin, Tierra del Fuego, Argentina are interpreted and documented. The volcaniclastic deposits, pumicite breccia and tuffaceous sandstones, are formed by glass shards, plagioclase crystals, and pumiceous and lithic andesitic fragments. Originally deposited as tephra fallout, they have been subsequently reworked and redeposited in marine settings. The final deposits, however, are interpreted essentially as syn-eruptive. U–Pb dating of detrital zircons gave a 46.3 ± 0.4 Ma (early Lutetian) age for the top of the Punta Torcida Formation and 41.9 ± 0.71 (late Lutetian) to 39.6 ± 0.82 (Bartonian) ages for the Leticia Formation. Paleogene volcanic rocks are unknown in the Southern Patagonian-Fuegian Andes; hence the studied volcanic deposits with minimal reworking are important to evaluate the time lag between eruption and true depositional ages in detrital zircons. The resulting dates allow evaluating the timing of the important, basin-wide, intra-Eocene unconformity known from Tierra del Fuego to Lago Argentino, Santa Cruz, Argentina. The documented eruptive phases are related to Andean magmatism, probably located in the outcrop area of the Seno Año Nuevo suite in the Chilean Archipelago.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Pergamon-Elsevier Science Ltd  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
AUSTRAL-MAGALLANES BASIN  
dc.subject
DETRITAL ZIRCONS  
dc.subject
EOCENE VOLCANISM  
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FUEGIANANDES  
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U–PB DATING  
dc.subject.classification
Geología  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Eocene volcanism in the Fuegian Andes: Evidence from petrography and detrital zircons in marine volcaniclastic sandstones  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2021-02-17T20:55:09Z  
dc.journal.volume
104  
dc.journal.pagination
1-28  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Olivero, Eduardo Bernardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; Argentina  
dc.description.fil
Fil: Torres Carbonell, Pablo Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina  
dc.description.fil
Fil: Svojtka, Martin. Institute Of Geology; República Checa  
dc.description.fil
Fil: Fanning, Christopher Mark. Australian National University; Australia  
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Fil: Hervé, Francisco. Universidad Andrés Bello; Chile. Universidad de Chile; Chile  
dc.description.fil
Fil: Nývlt, Daniel. Czech Geological Survey; República Checa  
dc.journal.title
Journal of South American Earth Sciences  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0895981120303965  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jsames.2020.102853