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dc.contributor.authorBallivián Justiniano, Carlos A.-
dc.contributor.authorBasei, Miguel A.-
dc.contributor.authorSato, Ana Maria-
dc.contributor.authorGonzález, Pablo Diego-
dc.contributor.authorBenítez, Manuela-
dc.contributor.authorLanfranchini, Mabel-
dc.date.accessioned2020-08-19T17:05:35Z-
dc.date.available2020-08-19T17:05:35Z-
dc.date.issued2020-
dc.identifier.citationBallivián Justiniano, C., Basei, M., Sato, A. M., González, P. D., Benítez, M., Lanfranchini, M. (2020). The Neoproterozoic basement of the Sauce Chico Inlier (Ventania System): Geochemistry and U–Pb geochronology of igneous rocks with African lineage in central-eastern Argentina. Journal of South American Earth Sciences; 98; 102391.es_ES
dc.identifier.issn0895-9811es_ES
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0895981119303116?via%3Dihub-
dc.identifier.urihttp://rid.unrn.edu.ar/handle/20.500.12049/5621-
dc.description.abstractThis study describes the geology, geochemistry, and LA-ICP-MS U–Pb geochronology of igneous rocks that crop out in the Sauce Chico Inlier (SCI) and constitute the Neoproterozoic basement of the Ventania System, Argentina. Magmatism registered in the SCI has developed in two phases. The first phase, of Tonian age, is represented by rift-related calc-alkaline and alkaline granites with ages of 783.8 ± 3.7 Ma (εNd(t)=−7.20) and 776.5 ± 4.7 Ma (εNd(t) = +1.65), respectively. This phase would be related to the break-up of the Rodinia supercontinent and subsequent opening of the Adamastor Ocean. In the Dom Feliciano Belt of southern Brazil and eastern Uruguay, the Tonian magmatism is represented in the Cerro Olivo Complex of the Punta del Este Terrane and in basement inliers of the Pelotas Batholith. The second phase, of Ediacaran age, started with the intrusion of syn-orogenic calc-alkaline granites (620.8 ± 5.8 Ma and 620.3 ± 2.5 Ma; εNd(t)=−9.94/−9.18) and continued with the extrusion of post-orogenic alkaline (577.3 ± 3.9 Ma; εNd(t)=−6.29) and calc-alkaline (543.6 ± 4.0 Ma; εNd(t)=−3.38) acid volcanic rocks. This phase would be related to the closure of the Adamastor Ocean, generation of a magmatic arc along the western margin of the Kalahari Craton, and collision between this and the Río de la Plata Craton. A post-collisional magmatism would have developed due to orogenic collapse (< 580 Ma). With the exception of the Tonian alkaline granite, in the remaining SCI igneous rocks, the juvenile component becomes more important as the crystallization age decreases. The available Nd model ages are between 1.80 and 1.14 Ga and suggest a mixing of older crust with juvenile material. The tectonic evolution of the Ventania System basement is consistent with that observed in the Dom Feliciano Belt and its African counterparts. We present here the first evidence of Tonian magmatism in the Ventania System basement. The results presented here also confirm those obtained previously by other authors. Zircon cores from the SCI igneous rocks have U–Pb inherited ages between ca. 1200 and 900 Ma that could be indicative of a lineage with the Gariep Belt and its Namaqua basement in southwestern Africaes_ES
dc.format.extentp. 102391es_ES
dc.format.mediumdigitales_ES
dc.language.isoenes_ES
dc.publisherElsevier Science Ltdes_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/-
dc.titleThe Neoproterozoic basement of the Sauce Chico Inlier (Ventania System): Geochemistry and U–Pb geochronology of igneous rocks with African lineage in central-eastern Argentinaes_ES
dc.typeArticuloes_ES
dc.rights.licenseCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)-
dc.description.filiationBallivián Justiniano, Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Recursos Minerales (INREMI), Universidad Nacional de La Plata–Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina.es_ES
dc.description.filiationBasei, Miguel. Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq). Centro de Pesquisas Geocronológicas (CPGeo), Instituto de Geociências, Universidade de São Paulo, Cidade Universitária; Brasil.es_ES
dc.description.filiationSato, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas; Argentina.es_ES
dc.description.filiationGonzález, Pablo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Investigación en Paleobiología y Geología (IIPG), Universidad Nacional de Río Negro–CONICET; Argentina.es_ES
dc.description.filiationBenítez, Manuela. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIC). Instituto de Recursos Minerales (INREMI), Universidad Nacional de La Plata–CIC; Argentina.es_ES
dc.description.filiationLanfranchini, Mabel. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIC). Instituto de Recursos Minerales (INREMI), Universidad Nacional de La Plata–CIC; Argentina.es_ES
dc.subject.keywordLA-ICP-MS U–Pb Zircon Datinges_ES
dc.subject.keywordSm–Nd isotope dataes_ES
dc.subject.keywordSierra de la Ventana Beltes_ES
dc.subject.keywordDom Feliciano Beltes_ES
dc.subject.keywordGariep Beltes_ES
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_ES
dc.subject.materiaCiencias Exactas y Naturaleses_ES
dc.origin.lugarDesarrolloUniversidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología.es_ES
dc.relation.journalissue98es_ES
dc.description.reviewtruees_ES
dc.description.resumen-es_ES
dc.identifier.doihttps://doi.org/10.1016/j.jsames.2019.102391-
dc.relation.journalTitleJournal of South American Earth Scienceses_ES
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