Petrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)

Detalhes bibliográficos
Autor(a) principal: Bellieni, G.
Data de Publicação: 1995
Outros Autores: Piccirillo, E. M., Petrini, R., Girardi, V. A. V., Leal, A. B. Menezes, Teixeira, W., Leal, L. R. Bastos, Min, A. De, Chiaramonti, P. Comin, Oliveira, M. A. F. Tanner de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/8546
Resumo: Texto completo: acesso restito. p.252-261
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spelling Bellieni, G.Piccirillo, E. M.Petrini, R.Girardi, V. A. V.Leal, A. B. MenezesTeixeira, W.Leal, L. R. BastosMin, A. DeChiaramonti, P. CominOliveira, M. A. F. Tanner deBellieni, G.Piccirillo, E. M.Petrini, R.Girardi, V. A. V.Leal, A. B. MenezesTeixeira, W.Leal, L. R. BastosMin, A. DeChiaramonti, P. CominOliveira, M. A. F. Tanner de2013-02-19T16:32:44Z19950010-7999http://www.repositorio.ufba.br/ri/handle/ri/8546v. 122, n. 3Texto completo: acesso restito. p.252-261Early Proterozoic (2.0–2.4 Ga), unmetamorphosed mafic dykes intrude Archean (3.1–2.7 Ga) terrains of the northern Sao Francisco craton (Uaua, NE-Brazil). The dykes are composed of evolved [atomic Mg/(Mg+Fe2)<0.6] two-pyroxene quartz tholeiites, the compositional variations of which are compatible with gabbro fractionation from different parental melts. The incompatible trace-element patterns indicate that the parental melts derived from partial melting of chemically heterogeneous garnet peridotite sources. Geochemistry and Sr-Nd isotopes imply some contamination of the Uaua dyke magma by continental crustal components during emplacement. Sr-isotopes suggest that the “uncontaminated” dykes may be related to time-integrated depleted mantle materials, while Nd-isotopes suggest mantle sources similar to the bulk Earth composition. The “uncontaminated” dykes have a positive Nb-anomaly and incompatible element contents which do not support appreciable enrichment of large ion lithophile and light rare earth elements in the source(s) throughmantle metasomatism and/or crustal components related to dehydration of a subducting slab, and an anorogenic ensialic emplacement is inferred. The Uaua dykes are chemically and isotopically distinct from the Early–Middle Proterozoic (1.9–1.7 Ga) unmetamorphosed dykes from W-Uruguay (Rio de La Plata craton) which are believed to have originated from different garnet peridotite sources. This suggests that Uaua–Uruguay compositional differences may reflect different Archean mantle differentiation and evolution of the cratonization processes. If this possibility proves to be correct, then magma genesis from various South American cratons would be by independent cratonic processes and their imprints on the subcratonic mantle.Submitted by Suelen Reis (suelen_suzane@hotmail.com) on 2013-02-18T14:16:07Z No. of bitstreams: 1 Bellieni.pdf: 819558 bytes, checksum: 25496ca434496a1bc68062964cedfa5c (MD5)Approved for entry into archive by Fatima Cleômenis Botelho Maria (botelho@ufba.br) on 2013-02-19T16:32:44Z (GMT) No. of bitstreams: 1 Bellieni.pdf: 819558 bytes, checksum: 25496ca434496a1bc68062964cedfa5c (MD5)Made available in DSpace on 2013-02-19T16:32:44Z (GMT). No. of bitstreams: 1 Bellieni.pdf: 819558 bytes, checksum: 25496ca434496a1bc68062964cedfa5c (MD5) Previous issue date: 1995http://dx.doi.org/10.1007/s004100050125reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAPetrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)Contributions to Mineralogy and Petrologyinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINALBellieni.pdfBellieni.pdfapplication/pdf819558https://repositorio.ufba.br/bitstream/ri/8546/1/Bellieni.pdf25496ca434496a1bc68062964cedfa5cMD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/8546/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTBellieni.pdf.txtBellieni.pdf.txtExtracted texttext/plain41570https://repositorio.ufba.br/bitstream/ri/8546/3/Bellieni.pdf.txt120890e97ff6b05ce971d57c998a3afdMD53ri/85462022-08-08 13:17:37.525oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-08-08T16:17:37Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Petrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)
dc.title.alternative.pt_BR.fl_str_mv Contributions to Mineralogy and Petrology
title Petrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)
spellingShingle Petrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)
Bellieni, G.
title_short Petrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)
title_full Petrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)
title_fullStr Petrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)
title_full_unstemmed Petrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)
title_sort Petrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)
author Bellieni, G.
author_facet Bellieni, G.
Piccirillo, E. M.
Petrini, R.
Girardi, V. A. V.
Leal, A. B. Menezes
Teixeira, W.
Leal, L. R. Bastos
Min, A. De
Chiaramonti, P. Comin
Oliveira, M. A. F. Tanner de
author_role author
author2 Piccirillo, E. M.
Petrini, R.
Girardi, V. A. V.
Leal, A. B. Menezes
Teixeira, W.
Leal, L. R. Bastos
Min, A. De
Chiaramonti, P. Comin
Oliveira, M. A. F. Tanner de
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Bellieni, G.
Piccirillo, E. M.
Petrini, R.
Girardi, V. A. V.
Leal, A. B. Menezes
Teixeira, W.
Leal, L. R. Bastos
Min, A. De
Chiaramonti, P. Comin
Oliveira, M. A. F. Tanner de
Bellieni, G.
Piccirillo, E. M.
Petrini, R.
Girardi, V. A. V.
Leal, A. B. Menezes
Teixeira, W.
Leal, L. R. Bastos
Min, A. De
Chiaramonti, P. Comin
Oliveira, M. A. F. Tanner de
description Texto completo: acesso restito. p.252-261
publishDate 1995
dc.date.issued.fl_str_mv 1995
dc.date.accessioned.fl_str_mv 2013-02-19T16:32:44Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/8546
dc.identifier.issn.none.fl_str_mv 0010-7999
dc.identifier.number.pt_BR.fl_str_mv v. 122, n. 3
identifier_str_mv 0010-7999
v. 122, n. 3
url http://www.repositorio.ufba.br/ri/handle/ri/8546
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