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The Upper Devonian palynostratigraphy and organic matter maturation of the Pulo do Lobo Domain, South Portuguese Zone, Portugal

2006Journal article Open access
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dc.contributor.authorPereira, Zélia
dc.contributor.authorFernandes, Paulo
dc.contributor.authorOliveira, José Tomás
dc.date.accessioned2014-09-24T11:00:27Z
dc.date.available2014-09-24T11:00:27Z
dc.date.issued2006
dc.date.updated2014-09-23T10:46:33Z
dc.description.abstractPalynostratigraphic research in the Pulo do Lobo Domain, South Portuguese Zone, Iberian Variscides, allows the age revision and the following correlations among the composing stratigraphic units: the Pulo do Lobo and Atalaia Formations exhibit lithological and deformational affinities, and no age determination was achieved; the Ribeira de Limas and Gafo formations are of early Frasnian and the Santa Iria, Horta da Torre and Represa formations. yielded palynomorphs oflate Famennian age. Vitrinite reflectance values of the organic matter indicate that the Pulo do Lobo and Atalaia formations reach the higher greenschist facies of metamorphism while all the overlying units belong to the upper epizone. The metamorphic and structural contrasts suggest that the Pulo do Lobo!Atalaia formations were once part of a pre-Famennian accretionary prism related to a northward subduction while all the other overlying units were laid down in a sedimentary basin, discordant over that paleoprism. From all these data, it is inferred that this basin and the Iberian Pyrite Belt basin were part of the same paleogeographic realm during the late Devonian.por
dc.description.abstractInvestigacoes palinoestratigraficas efcctuadas na parte portuguesa do Dominio do Pulo do Lobo, Zona Sui Portuguesa, permitiram rever as datacoes das suas unidades constituintes e estabelecer as seguintes correlacoes: as Formacoes de Pulo do Lobo e Atalaia exibem afinidade litologica e de deformacao e nao permitiram obtencao de datacoes; as Formacoes de Ribeira de Limas e Gafo possuem miosporos de idade Frasniano inferior e as Formacoes Santa Iria, Horta da Torre e Represa foram datadas do Fameniano superior. Os indices de maturacao da materia organica das unidades Pulo do Lobo e Atalaia indicam condicoes de metamorfismo da facies xistos verdes alta, enquanto os das restantes unidades indicam a parte alta da epizona. Os contrastes metamorficos e estruturais sugerem que 0 par Formacao Pulo do Lobo! Formacao Atalaia foi parte integrante do paleoprisma acrecionario, de idade pre-Fameniano, associado a uma zona de subduccao para Norte, enquanto que as restantes unidades depositaram-se numa bacia sedimentar, discordante sobre aquele paleoprisma. Esugerido que esta bacia e a da Faixa Piritosa estiveram em continuidade e pertenceram a mesma area paleogeografica durante 0 Devonico superior.por
dc.identifier.citationPereira, Zélia; Fernandes, Paulo; Oliveira, José Tomás. The Upper Devonian Palynostratigraphy and Organic Matter Maturation of the Pulo do Lobo Domain, South Portuguese Zone, Portugal, Comunicações Geológicas, 93, 23-38, 2006.por
dc.identifier.issn0873-948X
dc.identifier.otherAUT: PFE01874;
dc.identifier.urihttp://hdl.handle.net/10400.1/5096
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherLaboratório Nacional de Energia e Geologia (LNEG)por
dc.relationTowards a Better Understanding of the Pyrite Belt Basin Evolution- PYBE
dc.subjectMiosporespor
dc.subjectPalynostratigraphypor
dc.subjectOrganic matter maturationpor
dc.subjectUpper Devonianpor
dc.subjectPulo do Lobo Domainpor
dc.subjectPyrite Beltpor
dc.subjectSouth Portuguese Zonepor
dc.titleThe Upper Devonian palynostratigraphy and organic matter maturation of the Pulo do Lobo Domain, South Portuguese Zone, Portugalpor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleTowards a Better Understanding of the Pyrite Belt Basin Evolution- PYBE
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCI%2FCTE-GIN%2F56450%2F2004/PT
oaire.citation.conferencePlaceLisboapor
oaire.citation.endPage38por
oaire.citation.startPage23por
oaire.citation.titleComunicações Geológicaspor
oaire.citation.volume93por
oaire.fundingStreamPOCI
person.familyNameFernandes
person.givenNamePaulo
person.identifier422469
person.identifier.ciencia-id051D-A133-65D9
person.identifier.orcid0000-0003-4888-0230
person.identifier.ridJ-6577-2014
person.identifier.scopus-author-id57197129025
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typearticlepor
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