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dc.contributor.author
Ghiglione, Matias
dc.contributor.author
Rocha, Emilio
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Raggio, Maria Fernanda
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Ramos, Miguel Esteban
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Ronda, Gonzalo
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Moyano Paz, Damián
dc.contributor.author
Varela, Augusto Nicolas
dc.contributor.author
Valencia, Victor
dc.date.available
2021-08-24T13:39:49Z
dc.date.issued
2021-07
dc.identifier.citation
Ghiglione, Matias; Rocha, Emilio; Raggio, Maria Fernanda; Ramos, Miguel Esteban; Ronda, Gonzalo; et al.; Santonian-Campanian continentalization in the Austral-Magallanes basin: regional correlation, provenance and geodynamic setting; Academic Press Ltd - Elsevier Science Ltd; Cretaceous Research; 128; 7-2021; 1-17
dc.identifier.issn
0195-6671
dc.identifier.uri
http://hdl.handle.net/11336/138755
dc.description.abstract
A key event in the paleogeographic evolution of the Austral-Magallanes foreland basin was the Santonian–Maastrichtian continentalization, marked by the appearance of deltaic, fluvial and wetland sequences stacked on top of deep marine deposits. The expanding ecological niche was exploited by theropods and influenced the evolutionary history of dinosaurs. We present new detrital zircon U–Pb geochronological data across this littoral to continental depocenter, in order to provide insights of its age, geographical extension, source regions and geodynamic setting. Littoral sandstones from La Anita Formation yield Maximum Depositional Ages (MDA) between ~86–80 Ma (weighted mean ages), and ~79–78 Ma youngest zircons. Our results are in accordance with a Santonian–Campanian depositional age. The sequence continues with badlands and fluvial systems (Cerro Fortaleza and La Irene Formations), followed by meandering fluvial and lacustrine deposits (Chorrillo Formation). Transgressive marine facies topping the sequence (Calafate Formation) yield a preferred Maastrichtian 69 ± 2 Ma MDA from the youngest zircon. The provenance and tectonic analyses indicate that basin shallowing during Santonian–Campanian times was driven by advance of the orogenic front, which produced the shift from a foredeep setting to a wedge-top depozone. The unroofing of progressively deeper structural levels is registered in the basin fill, which suggests exhumation in the Basement domain during the Santonian–Maastrichtian.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Ltd - 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
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PATAGONIAN ANDES
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CAMPANIAN- MAASTRICHTIAN
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DETRITAL ZIRCONS
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FORELAND BASIN
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CONTINENTAL EXPANSION
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CRETACEOUS DINOSAURS
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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
Santonian-Campanian continentalization in the Austral-Magallanes basin: regional correlation, provenance and geodynamic setting
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-07-30T18:21:15Z
dc.journal.volume
128
dc.journal.pagination
1-17
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
dc.description.fil
Fil: Rocha, Emilio. YPF - Tecnología; Argentina
dc.description.fil
Fil: Raggio, Maria Fernanda. YPF - Tecnología; Argentina
dc.description.fil
Fil: Ramos, Miguel Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
dc.description.fil
Fil: Ronda, Gonzalo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
dc.description.fil
Fil: Moyano Paz, Damián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
dc.description.fil
Fil: Varela, Augusto Nicolas. YPF - Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
dc.description.fil
Fil: Valencia, Victor. Washington State University. School Of Earth & Environmental Sciences; Estados Unidos
dc.journal.title
Cretaceous Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.cretres.2021.104968
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0195667121002160#!
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