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dc.contributor.authorMazoz, Ariela Oliveira-
dc.contributor.authorGonçalves, Guilherme de Oliveira-
dc.contributor.authorLana, Cristiano-
dc.contributor.authorBuick, Ian S.-
dc.contributor.authorMcSwiggen, Peter L.-
dc.contributor.authorCorfu, Fernando-
dc.contributor.authorKamo, Sandra L.-
dc.contributor.authorBin Fu-
dc.contributor.authorHao Wang-
dc.contributor.authorMoreira, Hugo-
dc.contributor.authorScholz, Ricardo-
dc.contributor.authorMartins, Lorena-
dc.contributor.authorPeixoto, Eliza-
dc.contributor.authorDantas, Elton Luiz-
dc.contributor.authorSantos, Roberto Ventura-
dc.date.accessioned2026-10-21T13:53:22Z-
dc.date.available2026-10-21T13:53:22Z-
dc.date.issued2024-
dc.identifier.citationMAZOZ, Ariela et al. Vermilion monazite: a new archean reference material for u-pb and sm-nd microanalysis. Chemical Geology, [S. l.], v. 658, art 122121, 2024. DOI: https://doi.org/10.1016/j.chemgeo.2024.122121. Disponível em: https://www.sciencedirect.com/science/article/pii/S0009254124002018?via%3Dihub.pt_BR
dc.identifier.urihttp://repositorio.unb.br/handle/10482/57306-
dc.language.isoeng-
dc.publisherElsevier BV-
dc.rightsAcesso Restritopt_BR
dc.titleVermilion monazite : a new archean reference material for u-pb and sm-nd microanalysis-
dc.typeArtigopt_BR
dc.subject.keywordMonazitapt_BR
dc.subject.keywordGeocronologia U-Pbpt_BR
dc.subject.keywordMateriais de referência geocronológicospt_BR
dc.subject.keywordSistema isotópico Sm-Ndpt_BR
dc.subject.keywordGeocronologia isotópicapt_BR
dc.identifier.doihttps://doi.org/10.1016/j.chemgeo.2024.122121pt_BR
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0009254124002018?via%3Dihub-
dc.description.abstract1Monazite (Vermilion) from the ∼2.7 Ga Vermilion Granitic Complex (Minnesota, USA) was investigated as a potential reference material for U-Pb geochronology, using electron microprobe, high-precision ID-TIMS and high-spatial resolution techniques (LA-(Q/SF/MC)-ICP-MS and SHRIMP). Vermilion monazite is relatively homogeneous in BSE images. It is characterised as a monazite-(Ce) with uniform, relatively LREE-enriched chondrite-normalised REE patterns (Eu/Eu* = 0.074–0.085). ID-TIMS U-Pb analyses yielded concordant to slightly (−0.6% to 1.8%) discordant isotope data with weighted mean 207Pb*/206Pb* dates of 2668.6 ± 1.8 Ma (2σ, MSWD = 1.3, n = 3) and 2666.8 ± 1.8 Ma (2σ, MSWD = 4.0, n = 4). High-spatial resolution data from SHRIMP and LA-(Q/SF/MC)-ICP-MS agree with the ID-TIMS age. Using Vermilion monazite as primary reference material, LA-SF-ICP-MS analyses reproduced the age of several other reference monazites within −1.13% to +1.64% accuracy. Nd isotopes obtained via ID-TIMS and solution MC-ICP-MS returned consistent 143Nd/144Nd ratios of 0.510694 ± 0.000040 (2σ) and 0.510726 ± 0.000014 (2σ), respectively. The LA-MC-ICP-MS 143Nd/144Nd ratios of 0.51071 ± 0.00001 (2σ) and 0.51065 ± 0.00001 (2σ) are also in agreement within uncertainties. Results of Sm-Nd isotope analyses by LA-MC-ICP-MS from two laboratories yielded mean 147Sm/144Nd ratios of 0.0869 ± 0.0002 (2.5% RSD, 2σ, n = 58) and 0.0835 ± 0.0001 (2.2% RSD, 2σ, n = 50), reflecting small variations in individual fragments. The initial epsilon Nd (εNdi) varies from −0.8 ± 0.5 to 0.6 ± 0.4 (2σ). The reproducibility of our results shows that Vermilion monazite can be used as a primary reference material for U-Pb geochronology and is suitable as a secondary reference material for Sm-Nd isotopic tracing. The Archean age of Vermilion monazite, the oldest available as a reference material, will facilitate the investigation of Archean crustal evolution processes and broaden the prospect of studying ancient metamorphic events by combining matrix-matched U-Pb geochronology and Sm-Nd isotopic tracing.pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0455-8784pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7954-5059pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6071-8100pt_BR
dc.contributor.affiliationUniversidade de Brasília, Instituto de Geociênciaspt_BR
dc.contributor.affiliationUniversidade de Brasília, Instituto de Geociênciaspt_BR
dc.contributor.affiliationStellenbosch University, The institution will open in a new tab, Stellenbosch, South Africapt_BR
dc.contributor.affiliationStellenbosch University, The institution will open in a new tab, Stellenbosch, South Africapt_BR
dc.contributor.affiliationMcSwiggen & Associates, 2855 Anthony Lane South, Suite B15, St. Anthony, MN 55418, USApt_BR
dc.contributor.affiliationUniversity of Oslo, Oslo, Norwaypt_BR
dc.contributor.affiliationUniversity of Toronto, Department of Earth Sciences, Jack Satterly Geochronology Laboratorypt_BR
dc.contributor.affiliationThe Australian National University, Research School of Earth Sciences, Canberra, Australiapt_BR
dc.contributor.affiliationInstitute of Geology and Geophysics, Chinese Academy of Sciences, State Key Laboratory of Lithospheric Evolution, Beijing, Chinapt_BR
dc.contributor.affiliationUniversity of Portsmouth, Geography and Geosciences, School of the Environment, UKpt_BR
dc.contributor.affiliationStellenbosch University, The institution will open in a new tab, Stellenbosch, South Africapt_BR
dc.contributor.affiliationStellenbosch University, The institution will open in a new tab, Stellenbosch, South Africapt_BR
dc.contributor.affiliationUniversidade de Brasília, Instituto de Geociênciaspt_BR
dc.contributor.affiliationUniversidade de Brasília, Instituto de Geociênciaspt_BR
dc.contributor.affiliationUniversidade de Brasília, Instituto de Geociênciaspt_BR
dc.description.unidadeInstituto de Geociências (IG)pt_BR
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