The performance of the (U plus Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/0001-3765201920170397 http://hdl.handle.net/11449/185566 |
Resumo: | We have developed the first laboratory for (U-Th-Sm)/He thermochronology measurements in South America. Helium is measured using a high-sensitivity magnetic sector mass spectrometer (GVI-Helix-SFT) and a double focusing single collector inductively coupled plasma mass spectrometer (Thermo Scientific ELEMENT2) is used for U, Th and Sm determinations. Repeated analyses of fragments of Durango fluorapatite crystals yields an average age of 31.6 +/- 1.6 Ma (2 sigma) (n=62). This overlaps the long-term average of Durango fluorapatite measured in laboratories worldwide. The analysis of multiple single apatite crystals of a Precambrian basement sample from Serra do Mar, southeastern Brazil, yields an average He age (60.5 +/- 8.7 Ma; n=8) that overlaps that measured in the SUERC laboratory (59.6 +/- 3 Ma; n=3). This confirms that the UNESP laboratory is capable of routinely measuring the (U-Th-Sm)/He ages of single apatite crystals. |
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The performance of the (U plus Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil(U-Th)/He datingHe calibrationNoble GasSerra do Mar AHe agesWe have developed the first laboratory for (U-Th-Sm)/He thermochronology measurements in South America. Helium is measured using a high-sensitivity magnetic sector mass spectrometer (GVI-Helix-SFT) and a double focusing single collector inductively coupled plasma mass spectrometer (Thermo Scientific ELEMENT2) is used for U, Th and Sm determinations. Repeated analyses of fragments of Durango fluorapatite crystals yields an average age of 31.6 +/- 1.6 Ma (2 sigma) (n=62). This overlaps the long-term average of Durango fluorapatite measured in laboratories worldwide. The analysis of multiple single apatite crystals of a Precambrian basement sample from Serra do Mar, southeastern Brazil, yields an average He age (60.5 +/- 8.7 Ma; n=8) that overlaps that measured in the SUERC laboratory (59.6 +/- 3 Ma; n=3). This confirms that the UNESP laboratory is capable of routinely measuring the (U-Th-Sm)/He ages of single apatite crystals.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Scottish Universities Environmental Research Centre (SUERC)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Petrobras Project (Geotectonic network)Univ Estadual Paulista, Dept Petrol & Metalogenia, Caixa Postal 178, BR-13506900 Rio Claro, SP, BrazilSUERC, Isotope Geosci Unit, East Kilbride G75 0QF, ScotlandUniv Estadual Paulista, Dept Petrol & Metalogenia, Caixa Postal 178, BR-13506900 Rio Claro, SP, BrazilCAPES: 081/2012FAPESP: 2009/54146-0Acad Brasileira De CienciasUniversidade Estadual Paulista (Unesp)SUERCSiqueira-Ribeiro, Maria C. [UNESP]Marin, Danieli F. C. [UNESP]Hackspacher, Peter C. [UNESP]Stuart, Finlay M.2019-10-04T12:36:32Z2019-10-04T12:36:32Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article11application/pdfhttp://dx.doi.org/10.1590/0001-3765201920170397Anais Da Academia Brasileira De Ciencias. Rio Janeiro: Acad Brasileira De Ciencias, v. 91, n. 1, 11 p., 2019.0001-3765http://hdl.handle.net/11449/18556610.1590/0001-3765201920170397S0001-37652019000100502WOS:000462629300001S0001-37652019000100502.pdf10401359359087340000-0003-2125-3050Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnais Da Academia Brasileira De Cienciasinfo:eu-repo/semantics/openAccess2023-12-16T06:19:44Zoai:repositorio.unesp.br:11449/185566Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:29:07.460668Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The performance of the (U plus Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil |
title |
The performance of the (U plus Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil |
spellingShingle |
The performance of the (U plus Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil Siqueira-Ribeiro, Maria C. [UNESP] (U-Th)/He dating He calibration Noble Gas Serra do Mar AHe ages |
title_short |
The performance of the (U plus Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil |
title_full |
The performance of the (U plus Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil |
title_fullStr |
The performance of the (U plus Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil |
title_full_unstemmed |
The performance of the (U plus Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil |
title_sort |
The performance of the (U plus Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil |
author |
Siqueira-Ribeiro, Maria C. [UNESP] |
author_facet |
Siqueira-Ribeiro, Maria C. [UNESP] Marin, Danieli F. C. [UNESP] Hackspacher, Peter C. [UNESP] Stuart, Finlay M. |
author_role |
author |
author2 |
Marin, Danieli F. C. [UNESP] Hackspacher, Peter C. [UNESP] Stuart, Finlay M. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) SUERC |
dc.contributor.author.fl_str_mv |
Siqueira-Ribeiro, Maria C. [UNESP] Marin, Danieli F. C. [UNESP] Hackspacher, Peter C. [UNESP] Stuart, Finlay M. |
dc.subject.por.fl_str_mv |
(U-Th)/He dating He calibration Noble Gas Serra do Mar AHe ages |
topic |
(U-Th)/He dating He calibration Noble Gas Serra do Mar AHe ages |
description |
We have developed the first laboratory for (U-Th-Sm)/He thermochronology measurements in South America. Helium is measured using a high-sensitivity magnetic sector mass spectrometer (GVI-Helix-SFT) and a double focusing single collector inductively coupled plasma mass spectrometer (Thermo Scientific ELEMENT2) is used for U, Th and Sm determinations. Repeated analyses of fragments of Durango fluorapatite crystals yields an average age of 31.6 +/- 1.6 Ma (2 sigma) (n=62). This overlaps the long-term average of Durango fluorapatite measured in laboratories worldwide. The analysis of multiple single apatite crystals of a Precambrian basement sample from Serra do Mar, southeastern Brazil, yields an average He age (60.5 +/- 8.7 Ma; n=8) that overlaps that measured in the SUERC laboratory (59.6 +/- 3 Ma; n=3). This confirms that the UNESP laboratory is capable of routinely measuring the (U-Th-Sm)/He ages of single apatite crystals. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-04T12:36:32Z 2019-10-04T12:36:32Z 2019-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/0001-3765201920170397 Anais Da Academia Brasileira De Ciencias. Rio Janeiro: Acad Brasileira De Ciencias, v. 91, n. 1, 11 p., 2019. 0001-3765 http://hdl.handle.net/11449/185566 10.1590/0001-3765201920170397 S0001-37652019000100502 WOS:000462629300001 S0001-37652019000100502.pdf 1040135935908734 0000-0003-2125-3050 |
url |
http://dx.doi.org/10.1590/0001-3765201920170397 http://hdl.handle.net/11449/185566 |
identifier_str_mv |
Anais Da Academia Brasileira De Ciencias. Rio Janeiro: Acad Brasileira De Ciencias, v. 91, n. 1, 11 p., 2019. 0001-3765 10.1590/0001-3765201920170397 S0001-37652019000100502 WOS:000462629300001 S0001-37652019000100502.pdf 1040135935908734 0000-0003-2125-3050 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Anais Da Academia Brasileira De Ciencias |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
11 application/pdf |
dc.publisher.none.fl_str_mv |
Acad Brasileira De Ciencias |
publisher.none.fl_str_mv |
Acad Brasileira De Ciencias |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129208354865152 |