Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/jspui/handle/123456789/13602
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSantos, Maristella Moreira-
dc.contributor.authorLana, Cristiano de Carvalho-
dc.contributor.authorCipriano, Ricardo Augusto Scholz-
dc.contributor.authorBuick, Ian S.-
dc.contributor.authorKamo, Sandra L.-
dc.contributor.authorCorfu, Fernando-
dc.contributor.authorQueiroga, Gláucia Nascimento-
dc.date.accessioned2021-08-27T18:09:47Z-
dc.date.available2021-08-27T18:09:47Z-
dc.date.issued2020pt_BR
dc.identifier.citationSANTOS, M. M. et al. LA-ICP-MS U–Pb dating of rutiles associated with hydrothermal mineralization along the southern Araçuaí Belt, SE Brazil. Journal of South American Earth Sciences, v. 99, p. 102502, abr. 2020. Disponível em: <https://www.sciencedirect.com/science/article/abs/pii/S0895981120300158>. Acesso em: 24 mar. 2021.pt_BR
dc.identifier.issn0895-9811-
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/13602-
dc.description.abstractThe presence of hydrothermal rutile enables the dating of mineralization related to hydrothermal processes. Refinement of the laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) technique is key to enabling the quick analysis of individual rutile crystals in high spatial resolution and dating of crystals with low U contents, as a prerequisite for the reliable characterization of hydrothermal deposits. For this study rutile crystals were selected from quartz and topaz veins that extend along the southeastern portion of the Araçuaí Belt, part of the long-lived (630 - 490 Ma) polyphase Brasiliano Orogen that formed during West Gondwana amalgamation. The purpose was to allow a systematic evaluation of in situ dating of hydrothermal rutile by LA-ICPMS. U–Pb ages from different rutiles range between 527 ± 6 Ma and 487 ± 5 Ma, indicating that different parts of the orogen were affected by episodic fluid flow under oxidizing conditions over a similar time interval. Our U–Pb dating results of rutiles associated with the Imperial Topaz mineralization in the Quadrilátero Ferrífero (southern portion of the São Francisco Craton, SE Brazil) constrains the age of those deposits to 500- 498 Ma, which is within the range of U–Pb ages of hydrothermal systems and mineralized zones previously reported for the region. The chemical composition of the studied hydrothermal rutiles, as determined by electron microprobe and LA-ICP-MS analysis, together with their U–Pb ages, suggests that the extensive fluid production required to form the hydrothermal deposits was generated from multiple sources. Fluid production was related to extensional collapse of the Araçuaí Orogen. The findings of this research clearly shows the utility of U–Pb rutile dating via LA-ICP-MS for geochronological study of a range of hydrothermal deposits.pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectHydrothermal rutilept_BR
dc.subjectLA-ICP-MS - laser ablation inductively coupled plasma mass spectrometrypt_BR
dc.subjectAraçuaí Orogenpt_BR
dc.subjectSouthern Espinhaço rangept_BR
dc.titleLA-ICP-MS U–Pb dating of rutiles associated with hydrothermal mineralization along the southern Araçuaí Belt, SE Brazil.pt_BR
dc.typeArtigo publicado em periodicopt_BR
dc.identifier.uri2https://www.sciencedirect.com/science/article/abs/pii/S0895981120300158pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jsames.2020.103093pt_BR
Appears in Collections:DEGEO - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
ARTIGO_LAICPMSDatingRutiles.pdf
  Restricted Access
2,69 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.