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Detrital zircon geochronology of the Carboniferous Baixo Alentejo Flysch Group (South Portugal); constraints on the provenance and geodynamic evolution of the South Portuguese Zone

2015Journal article Restricted access
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dc.contributor.authorRodrigues, B.
dc.contributor.authorChew, Dave
dc.contributor.authorJorge, R. C. G. S.
dc.contributor.authorFernandes, Paulo
dc.contributor.authorVeiga-Pires, C.
dc.contributor.authorOliveira, J. T.
dc.date.accessioned2015-08-24T14:47:50Z
dc.date.available2015-08-24T14:47:50Z
dc.date.issued2015
dc.date.updated2015-05-22T08:37:25Z
dc.description.abstractU–Pb detrital zircon data from the Baixo Alentejo Flysch Group in the South Portuguese Zone show significant age differences between formations. The Visean Mértola Formation and Serpukhovian to early Bashkirian Mira Formation are dominated by zircons in the 316–388Ma age range, whereas the late Bashkirian to late Moscovian Brejeira Formation is dominated by zircons with an age range of 498–687Ma. Detrital zircons spanning an age range of 0.9–1.1Ga are present in the Brejeira Formation but are absent in the Mértola and Mira formations. Detrital zircon ages of the Mértola and Mira formations indicate provenance from an extra-basinal source (Ossa–Morena Zone) with a minor intra-basinal contribution (South Portuguese Zone). The abundant presence of detrital zircon with age ranges of 500–750 and 0.9–1.1Ga in the Brejeira Formation suggests a sediment source from the Avalon–Meguma terranes with limited recycling from the SW Portugal Domain. The different inferred source areas for the Baixo Alentejo Flysch Group formations are attributed to the presence of a forebulge that was formed in Mid-Visean times during the foreland phase of the South Portuguese Zone. The forebulge acted as a physical barrier separating sub-basins that accumulated the Mértola–Mira and Brejeira sediments respectively.por
dc.identifier.citationRodrigues, B.; Chew, D. M.; Jorge, R. C. G. S.; Fernandes, P.; VEIGA-PIRES, C; Oliveira, J. T.Detrital zircon geochronology of the Carboniferous Baixo Alentejo Flysch Group (South Portugal); constraints on the provenance and geodynamic evolution of the South Portuguese Zone, Journal of the Geological Society, 172, 3, 294-308, 2015.por
dc.identifier.doihttp://dx.doi.org/10.1144/jgs2013-084
dc.identifier.issn0016-7649
dc.identifier.otherAUT: PFE01874; CVP01371;
dc.identifier.urihttp://hdl.handle.net/10400.1/6687
dc.language.isoengpor
dc.relation.publisherversionhttp://jgs.lyellcollection.org/por
dc.subjectCarboniferous Baixo Alentejo Flysch Group (South Portugal)por
dc.subjectDetrital zirconpor
dc.titleDetrital zircon geochronology of the Carboniferous Baixo Alentejo Flysch Group (South Portugal); constraints on the provenance and geodynamic evolution of the South Portuguese Zonepor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage308por
oaire.citation.startPage294por
oaire.citation.titleJournal of the Geological Societypor
person.familyNameRodrigues
person.familyNameFernandes
person.familyNameVeiga-Pires
person.givenNameBrígida
person.givenNamePaulo
person.givenNameCristina
person.identifier422469
person.identifier113325
person.identifier.ciencia-id631C-A162-3F1E
person.identifier.ciencia-id051D-A133-65D9
person.identifier.ciencia-id4A1F-CEDA-E66C
person.identifier.orcid0000-0001-9495-0813
person.identifier.orcid0000-0003-4888-0230
person.identifier.orcid0000-0002-9323-0723
person.identifier.ridJ-6577-2014
person.identifier.ridB-5144-2008
person.identifier.scopus-author-id57197129025
person.identifier.scopus-author-id7801372905
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication99ea34cc-7325-4ae7-b288-31d7e43ab28f
relation.isAuthorOfPublicationa2d98df3-a9c2-4364-a737-25b4e89df80b
relation.isAuthorOfPublicationd1541efa-0eaa-48dc-aea3-a1e64aa0065a
relation.isAuthorOfPublication.latestForDiscovery99ea34cc-7325-4ae7-b288-31d7e43ab28f

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