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Patterns of rare earth and other trace elements in Paleogene and Miocene clayey sediments from the Mondego platform (Central Portugal)

2015-10Journal article Open access
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dc.contributor.authorLisboa, Jose
dc.contributor.authorde Oliveira, Daniel Pipa Soares
dc.contributor.authorRocha, Fernando
dc.contributor.authorOliveira, Álvaro
dc.contributor.authorCarvalho, João
dc.date.accessioned2016-07-09T18:05:57Z
dc.date.available2016-07-09T18:05:57Z
dc.date.issued2015-10
dc.description.abstractIn the present study the origin of clay deposits occurring in an inland platform, in central Portugal, was investigated by their mineralogical and chemical composition. The clay deposits, exploited for ceramic industry are composed of silt-clay facies, the Monteira Member and the Arroça Member, which are assigned to the Coja Formation (Paleogene) and the Campelo Formation (Miocene), respectively. These clayey facies show almost compositional homogeneity, especially concerning texture. The mineralogical composition of the Monteira Member displays slightly higher content in smectite and interstratified clay minerals, which is supported by the chemical composition of samples analyzed. Both members present similar REE patterns, displaying an intense weathering record and little variation in the source area composition. Minor element geochemistry suggests low content in heavy minerals and transition metals. REE patterns and ratios of geochemical parameters support the dominant metasedimentary provenance, with a granite source contribution and also mature recycled sediments of continental origin. The study results’ suggest that the clays of these two members have the same source in terms of lithology and recycled sediments from the Hesperian massif. During the deposition of the Arroça Member, a major remobilization of the Monteira Member is suggested, explaining the geochemical similarity of both facies.pt_PT
dc.identifier.citationLisboa, J. V.; Oliveira, D. P. S. de; Rocha, F.; Oliveira, A.; Carvalho, J. - Patterns of rare earth and other trace elements in Paleogene and Miocene clayey sediments from the Mondego platform (Central Portugal). In: Chemie der Erde, Vol. 73, Issue 3 (October 2015), p. 389-401pt_PT
dc.identifier.doihttp://dx.doi.org./10.1016/j.chemer.2015.07.002pt_PT
dc.identifier.issn0009-2819
dc.identifier.urihttp://hdl.handle.net/10400.9/3035
dc.language.isoengpt_PT
dc.publisherElsevierpt_PT
dc.subjectSedimentos argilosospt_PT
dc.subjectArgilaspt_PT
dc.subjectTerras raraspt_PT
dc.subjectElementos rarospt_PT
dc.subjectPaleogénicopt_PT
dc.subjectMiocénicopt_PT
dc.subjectPlataforma do Mondego (Portugal)pt_PT
dc.subjectPortugal (Centro)pt_PT
dc.titlePatterns of rare earth and other trace elements in Paleogene and Miocene clayey sediments from the Mondego platform (Central Portugal)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleChemie der Erdept_PT
oaire.citation.volumeVol. 73, Issue 3pt_PT
person.familyNameLisboa
person.familyNamede Oliveira
person.familyNameRocha
person.familyNameOliveira
person.familyNameCarvalho
person.givenNameJose
person.givenNameDaniel Pipa Soares
person.givenNameFernando
person.givenNameÁlvaro
person.givenNameJoão
person.identifier2216267
person.identifier.ciencia-idA11D-DDD7-29F2
person.identifier.ciencia-id6F13-70A2-3998
person.identifier.ciencia-id1D16-E24A-F4E4
person.identifier.orcid0000-0002-4983-9347
person.identifier.orcid0000-0002-6338-8845
person.identifier.orcid0000-0002-3636-3933
person.identifier.orcid0000-0001-8475-2485
person.identifier.orcid0000-0003-2227-3918
person.identifier.ridA-4532-2009
person.identifier.scopus-author-id7003357332
person.identifier.scopus-author-id8626859600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication71f4f34c-3437-4e1c-af77-90c535e26945
relation.isAuthorOfPublication37bc3d74-b0fe-4e9b-8e8d-e2eabb196242
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relation.isAuthorOfPublication.latestForDiscovery7884dbcb-fd82-4c83-9a9e-361e32a512cd

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