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dc.date.accessioned 2022-07-01T19:29:13Z
dc.date.available 2022-07-01T19:29:13Z
dc.date.issued 2020-09-02
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/138768
dc.description.abstract We carried out a sedimentary provenance analysis of the Devonian Gualilan Group, Central Precordillera of western Argentina, focusing on the siliciclastic record of the Talacasto (Lower Devonian) and the Punta Negra (Lower-Middle Devonian) formations. Provenance is determined based on petrography, heavy minerals, whole-rock geochemistry, Sm–Nd isotopes, and U–Pb detrital zircon dating. Sandstones are composed of quartz, feldspar, and metamorphic and plutonic lithoclasts. The Gualilan Group underwent moderate weathering indicated by CIA values and Th/U ratios below 76 and 4.9, respectively. Th/Sc, Zr/Sc, Cr/V and La/Th ratios, negative Eu-anomalies and REE patterns point to felsic source compositions. The heavy minerals and zircon morphologies indicate that high-grade metamorphic and igneous rocks provided the bulk of detritus. TDM ages between 1.40 and 1.46 Ga and eNd(t) values ranging from − 9.21 to − 11.13 constrain the signature of the sources. U–Pb detrital zircon ages for the Talacasto Formation are equally distributed between the Famatinian (Late Cambrian–Late Devonian), Pampean–Brazilian (Neoproterozoic–Early Cambrian) and Grenvillian-Sunsas (Mesoproterozoic) orogenic cycles. Detrital zircon ages of the Punta Negra Formation were dominantly supplied from Mesoproterozoic rocks, linked to the Grenvillian-Sunsas orogeny. The data indicate a provenance from rocks located eastwards of the basin represented by the basement of the Pampean Ranges. The peripheral foreland basin developed during the post-collisional regime that followed the accretion of Cuyania against Gondwana. Whereas eastern and western Pampean Ranges provided detritus to the Talacasto Formation, the Punta Negra Formation was sourced by the western Pampean Ranges, implying exhumation and erosion of such basement during the Devonian. en
dc.format.extent 2467-2494 es
dc.language en es
dc.subject Provenance es
dc.subject Devonian Gualilán Group es
dc.subject Detrital zircon ages es
dc.subject Precordillera es
dc.subject SW Gondwana es
dc.title Provenance analysis of Devonian peripheral foreland basins in SW Gondwana, case of the Gualilán Group, Precordillera Argentina en
dc.type Articulo es
sedici.identifier.other doi:10.1007/s00531-020-01914-9 es
sedici.identifier.issn 1437-3254 es
sedici.identifier.issn 1437-3262 es
sedici.creator.person Arnol, Jonatan Ariel es
sedici.creator.person Uriz, Norberto Javier es
sedici.creator.person Cingolani, Carlos Alberto es
sedici.creator.person Stipp Basei, Miguel Angelo es
sedici.creator.person Abre, Paulina es
sedici.subject.materias Geología es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Naturales y Museo es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution 4.0 International (CC BY 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle International Journal of Earth Sciences es
sedici.relation.journalVolumeAndIssue vol. 109, no. 7 es

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