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dc.contributor.author
Hueck, Mathias
dc.contributor.author
Oriolo, Sebastián
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dc.contributor.author
Basei, Miguel A. S.
dc.contributor.author
Oyhantcabal, Pedro
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dc.contributor.author
Heller, Beatrix M.
dc.contributor.author
Wemmer, Klaus
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dc.contributor.author
Siegesmund, Siegfried
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dc.date.available
2023-07-10T11:17:50Z
dc.date.issued
2022-02
dc.identifier.citation
Hueck, Mathias; Oriolo, Sebastián; Basei, Miguel A. S.; Oyhantcabal, Pedro; Heller, Beatrix M.; et al.; Archean to early Neoproterozoic crustal growth of the southern South American Platform and its wide-reaching “African” origins; Elsevier Science; Precambrian Research; 369; 2-2022; 1-24
dc.identifier.issn
0301-9268
dc.identifier.uri
http://hdl.handle.net/11336/202827
dc.description.abstract
The amalgamation of southwestern Gondwana during the late Neoproterozoic Brasiliano/Pan-African orogenic cycle involved the tectonic interaction of the Congo, Kalahari and Rio de la Plata cratons, together with numerous smaller basement fragments scattered throughout South America. A comprehensive review of U-Pb and Lu-Hf spot analyses in zircon provides new insights on the pre-Brasiliano crustal growth of the main tectonic domains of the southern South American Platform from the Archean to the early Neoproterozoic. The results highlight similarities between five basement fragments, from south to north: the Nico Pérez Terrane, Tijucas Terrane, Camboriú Complex, Luis Alves Terrane and Curitiba Terrane. Whereas these units have variable characteristics, especially concerning differing degrees of tectonic reworking in the late Neoproterozoic, they share similarities in their geological evolution. They were all originally accreted in the Archean, as evidenced by Hf TDM model ages and zircon inheritance, and later experienced intense orogenic reworking during the Rhyacian and Orosirian. The Paleoproterozoic record is diverse and indicates a complex episodic evolution instead of a single orogenic event. Conspicuous diachronic magmatic events took place locally in the Late Paleoproterozoic and Mesoproterozoic, interrupting an otherwise relatively stable tectonic setting until the Neoproterozoic. The Archean origin and strong crustal signatures of the main Paleoproterozoic units distinguish these terranes from the Rio de la Plata Craton, evidencing instead stronger affinities with African crustal blocks such as the Congo and Kalahari cratons. This relationship has implications for the geodynamic reconstruction of southwest Gondwana that extend into the early Neoproterozoic, as it contextualizes the genetic link between the main Tonian events in the region, namely the formation of the São Gabriel Terrane and the emplacement of the magmatic protoliths of the basement of the Punta del Este Terrane. They can be understood as marginal and within-plate manifestations of an accretionary orogen, respectively. The basement of the Punta del Este Terrane has signatures compatible with the recycling of ancient crust through the mixture of mantellic magmatic input with the partial melting of Archean or Archean-derived Proterozoic lithosphere, a process that likely took place multiple times from the Paleoproterozoic onwards in the region.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Crecimiento de la corteza
dc.subject
Suroeste de Gondwana
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Cratón del Río de la Plata
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Plataforma Sudamericana
dc.subject.classification
Geología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Archean to early Neoproterozoic crustal growth of the southern South American Platform and its wide-reaching “African” origins
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-07-05T12:23:53Z
dc.journal.volume
369
dc.journal.pagination
1-24
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Hueck, Mathias. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Oriolo, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
dc.description.fil
Fil: Basei, Miguel A. S.. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Oyhantcabal, Pedro. Universidad de la Republica; Uruguay
dc.description.fil
Fil: Heller, Beatrix M.. Universite Paris-Saclay; Francia
dc.description.fil
Fil: Wemmer, Klaus. Universität Göttingen; Alemania
dc.description.fil
Fil: Siegesmund, Siegfried. Universität Göttingen; Alemania
dc.journal.title
Precambrian Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.precamres.2021.106532
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0301926821004605
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