Publication
Unprecedented U-Pb-Th SHRIMP and Lu-Hf isotopic data in zircon from Tandilia basement rocks, Argentina: new insights into Palaeoproterozoic and Neoproterozoic crustal reworking of the Rio de la Plata craton
| datacite.subject.fos | Ciências Naturais::Ciências da Terra e do Ambiente | |
| datacite.subject.sdg | 15:Proteger a Vida Terrestre | |
| dc.contributor.author | Angeletti, Melisa | |
| dc.contributor.author | Chichorro, Martim Afonso | |
| dc.contributor.author | Castro, Antonio | |
| dc.contributor.author | Frisicale, María Cristina | |
| dc.contributor.author | Solá, A. Rita | |
| dc.contributor.author | Dimieri, Luis Vicente | |
| dc.contributor.author | Martinez, Juan Cruz | |
| dc.date.accessioned | 2025-11-12T16:37:04Z | |
| dc.date.available | 2025-11-12T16:37:04Z | |
| dc.date.issued | 2025-11 | |
| dc.description.abstract | ABSTRACT: We present new geochronological zircon data from the Siempre Amigos Hill (SAH), a small but representative portion of Tandilia Terrane within the R & iacute;o de la Plata Craton (RPC). U-Pb-Th SHRIMP data indicate a heterogeneous Palaeoproterozoic (Rhyacian) crust. A garnet-bearing granite (2165 +/- 16 Ma) hosts felsic (2108 +/- 13.6 Ma) to intermediate gneiss protolith (2104 +/- 8 Ma), andesite with a sanukitoid signature (2094 +/- 47 Ma) and granulites or charnockites. Additionally, calc-alkaline granitoids (2092 +/- 13 Ma) intruded, as a result of differentiation from an igneous mafic sanukitoid source. Localised low-temperature shear zones affected the sequence. Lu-Hf isotopic data for the post-orogenic stage (< 2.1 Ga) complement previous results, showing progressive negative epsilon Hf-(t) values. These isotopes suggest post-orogenic transtension. New Neoproterozoic ages (652 +/- 37 Ma, 618.4 +/- 11.2 Ma and 686 +/- 60 Ma) from granites, with low-to-very low zircon Th/U ratios, are presented as evidence of U-Th-Pb systems overprinting by Neoproterozoic (Cryogenian) thermal-hydrothermal events. Those Neoproterozoic ages are, within analytical uncertainty, equivalent to the 656 +/- 19 Ma metamorphic age obtained for the Palaeoproterozoic granulite. These new Neoproterozoic ages, suggests a thermal perturbation linked either to the collision of the Nico Perez Terrane against the passive margin of RPC, or the Neoproterozoic evolution of the Ventania System basement during the Brasiliano/ Pan-African orogeny. | eng |
| dc.identifier.citation | Angeletti, M., Chichorro, M., Castro, A., Frisicale, M.C., Solá, R., Dimieri, L.V. & Martinez, J.C. (2025). Unprecedented U-Pb-Th SHRIMP and Lu-Hf isotopic data in zircon from Tandilia basement rocks, Argentina: new insights into Palaeoproterozoic and Neoproterozoic crustal reworking of the Rio de la Plata craton. In: Precambrian Research, 2025, vol. 430, article 107941. https://doi.org/10.1016/j.precamres.2025.107941 | |
| dc.identifier.doi | 10.1016/j.precamres.2025.107941 | |
| dc.identifier.eissn | 1872-7433 | |
| dc.identifier.issn | 0301-9268 | |
| dc.identifier.uri | http://hdl.handle.net/10400.9/6141 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | |
| dc.publisher | Elsevier | |
| dc.relation.hasversion | https://www.sciencedirect.com/science/article/pii/S0301926825002670?pes=vor&utm_source=clarivate&getft_integrator=clarivate | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | Geology | |
| dc.subject | Isotopes | |
| dc.subject | Zircon | |
| dc.subject | U-Pb geochronology | |
| dc.subject | Palaeoproterozoic | |
| dc.subject | Neoproterozoic | |
| dc.title | Unprecedented U-Pb-Th SHRIMP and Lu-Hf isotopic data in zircon from Tandilia basement rocks, Argentina: new insights into Palaeoproterozoic and Neoproterozoic crustal reworking of the Rio de la Plata craton | eng |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.title | Precambrian Research | |
| oaire.citation.volume | 430 | |
| oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |
| person.familyName | Chichorro | |
| person.familyName | Castro | |
| person.familyName | Frisicale | |
| person.familyName | Solá | |
| person.givenName | Martim Afonso | |
| person.givenName | Antonio | |
| person.givenName | María Cristina | |
| person.givenName | A. Rita | |
| person.identifier.ciencia-id | BC1D-671F-1296 | |
| person.identifier.ciencia-id | 6816-2560-2353 | |
| person.identifier.ciencia-id | 4713-7D9F-6567 | |
| person.identifier.orcid | 0000-0001-5000-0736 | |
| person.identifier.orcid | 0000-0002-7257-2556 | |
| person.identifier.orcid | 0000-0002-4709-0264 | |
| person.identifier.orcid | 0000-0001-9567-5470 | |
| person.identifier.rid | G-6378-2015 | |
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