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DC Field | Value | Language |
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dc.contributor.author | Dos Santos, Ticiano J.S. | - |
dc.contributor.author | Fetter, Allen H. | - |
dc.contributor.author | Van Schmus, W. Randall | - |
dc.contributor.author | Hackspacher, Peter C. | - |
dc.date.accessioned | 2014-05-27T11:24:04Z | - |
dc.date.accessioned | 2016-10-25T18:27:47Z | - |
dc.date.available | 2014-05-27T11:24:04Z | - |
dc.date.available | 2016-10-25T18:27:47Z | - |
dc.date.issued | 2009-12-01 | - |
dc.identifier | http://dx.doi.org/10.1144/SP323.13 | - |
dc.identifier.citation | Geological Society Special Publication, v. 323, p. 271-281. | - |
dc.identifier.issn | 0305-8719 | - |
dc.identifier.uri | http://hdl.handle.net/11449/71309 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/71309 | - |
dc.description.abstract | The c. 600 Ma Brasiliano Borborema Province of NE Brazil comprises a complex collage of Precambrian crustal blocks cut by a series of continental-scale shear zones. The predominant basement rocks in the province are 2.1-2.0 Ga Transamazonian gneisses of both juvenile and reworked nature. U-Pb zircon and Sm-Nd whole-rock studies of tonalite-trondhjemite-granodiorite basement gneisses in the NW Ceará or Médio Coreaú domain in the northwestern part of the Borborema Province indicate that this represents a continental fragment formed by 2.35-2.30 Ga juvenile crust. This block has no apparent genetic affinity with any other basement gneisses in the Borborema Province, and it does not represent the tectonized margin of the c. 2.1-2.0 Ga São Luis Craton to the NW. The petrological and geochemical characteristics, as well as the Nd-isotopic signatures of these gneisses, are consistent with their genesis in an island arc setting. This finding documents a period of crustal growth during a period of the Earth's history which is known for its tectonic quiescence and paucity of crust formation. © Geological Society of London 2009. | en |
dc.format.extent | 271-281 | - |
dc.language.iso | eng | - |
dc.source | Scopus | - |
dc.subject | basement rock | - |
dc.subject | continental margin | - |
dc.subject | crustal evolution | - |
dc.subject | geochemistry | - |
dc.subject | gneiss | - |
dc.subject | granodiorite | - |
dc.subject | island arc | - |
dc.subject | petrology | - |
dc.subject | Precambrian | - |
dc.subject | samarium-neodymium dating | - |
dc.subject | shear zone | - |
dc.subject | tectonic evolution | - |
dc.subject | tectonic setting | - |
dc.subject | tonalite | - |
dc.subject | trondhjemite | - |
dc.subject | uranium-lead dating | - |
dc.subject | Borborema | - |
dc.subject | Brazil | - |
dc.title | Evidence for 2.35 to 2.30 Ga juvenile crustal growth in the northwest Borborema Province, NE Brazil | en |
dc.type | outro | - |
dc.contributor.institution | Universidade Estadual de Campinas (UNICAMP) | - |
dc.contributor.institution | University of Kansas (KU) | - |
dc.contributor.institution | US Nuclear Regulatory Commission | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.description.affiliation | Instituto de Geociências Universidade Estadual de Campinas (UNICAMP), PO Box 6152, CEP 13081-970, Campinas, SP | - |
dc.description.affiliation | Department of Geology University of Kansas, Lawrence, Kansas 66045-7613 | - |
dc.description.affiliation | US Nuclear Regulatory Commission, 11555 Rockville Pike, Rockville, MD 20852 | - |
dc.description.affiliation | Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista (UNESP), PO Box 13506-900, Rio Claro, SP | - |
dc.description.affiliationUnesp | Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista (UNESP), PO Box 13506-900, Rio Claro, SP | - |
dc.identifier.doi | 10.1144/SP323.13 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Geological Society Special Publication | - |
dc.identifier.scopus | 2-s2.0-74949114470 | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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