Vermilion monazite : a new archean reference material for U-Pb and Sm-Nd microanalysis.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorMazoz, Ariela Oliveira-
Autor(es): dc.creatorGonçalves, Guilherme de Oliveira-
Autor(es): dc.creatorLana, Cristiano de Carvalho-
Autor(es): dc.creatorBuick, Ian S.-
Autor(es): dc.creatorMcSwiggen, Peter L.-
Autor(es): dc.creatorCorfu, Fernando-
Autor(es): dc.creatorKamo, Sandra L.-
Autor(es): dc.creatorFu, Bin-
Autor(es): dc.creatorWang, Hao-
Autor(es): dc.creatorMoreira, Hugo-
Autor(es): dc.creatorCipriano, Ricardo Augusto Scholz-
Autor(es): dc.creatorMartins , Lorena-
Autor(es): dc.creatorPeixoto, Eliza Inez Nunes-
Autor(es): dc.creatorDantas, Elton Luiz-
Autor(es): dc.creatorSantos, Roberto Ventura-
Data de aceite: dc.date.accessioned2025-08-21T15:56:44Z-
Data de disponibilização: dc.date.available2025-08-21T15:56:44Z-
Data de envio: dc.date.issued2024-08-30-
Data de envio: dc.date.issued2024-08-30-
Data de envio: dc.date.issued2023-
Fonte completa do material: dc.identifierhttps://www.repositorio.ufop.br/handle/123456789/18451-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0009254124002018-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.chemgeo.2024.122121-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1028184-
Descrição: dc.descriptionMonazite (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 ho- mogeneous in BSE images. It is characterised as a monazite-(Ce) with uniform, relatively LREE-enriched chon-drite-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.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectMonazite-
Palavras-chave: dc.subjectReference material-
Palavras-chave: dc.subjectU-Pb geochronology-
Palavras-chave: dc.subjectSm-Nd isotope composition-
Palavras-chave: dc.subjectTrace element composition-
Título: dc.titleVermilion monazite : a new archean reference material for U-Pb and Sm-Nd microanalysis.-
Aparece nas coleções:Repositório Institucional - UFOP

Não existem arquivos associados a este item.