Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/100948
DC FieldValueLanguage
dc.contributor.authorCruz, Armanda-
dc.contributor.authorDinis, Pedro-
dc.contributor.authorGomes, António-
dc.contributor.authorLeite, Paula-
dc.date.accessioned2022-07-22T08:20:28Z-
dc.date.available2022-07-22T08:20:28Z-
dc.date.issued2021-
dc.identifier.issn2076-3263pt
dc.identifier.urihttp://hdl.handle.net/10316/100948-
dc.description.abstractThe rare-earth element (REE) geochemistry of sedimentary deposits has been used in provenance investigations despite the transformation that this group of elements may suffer during a depositional cycle. In the present investigation, we used the geochemistry and XRD mineralogy of a set of sand and mud fluvial deposits to evaluate the ability of REE parameters in provenance tracing, and the changes in REE geochemistry associated with weathering and sorting. The analyzed deposits were generated in a subtropical drainage basin where mafic and felsic units are evenly represented, and these crystalline rocks are covered by sedimentary successions in a wide portion of the basin. A few element ratios appear to hold robust information about primary sources (Eu/Y, Eu/Eu*, LaN/YbN, LaN/SmN, and GdN/YbN), and the provenance signal is best preserved in sand than in mud deposits. Sediment cycles, however, change the REE geochemistry, affecting mud and sand deposits differently. They are responsible for significant REE depletion through quartz dilution in sands and may promote discernible changes in REE patterns in muds (e.g., increase in Ce content and some light REE depletion relative to heavy REE).pt
dc.language.isoengpt
dc.relationFCT - UIDB/04292/2020 (MARE)pt
dc.rightsopenAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt
dc.subjectrare-earth elementspt
dc.subjectfluvial sedimentspt
dc.subjectrecognition of primary sourcespt
dc.subjectexogenous compositional transformationspt
dc.subjectCunene River Basinpt
dc.titleInfluence of Sediment Cycling on the Rare-Earth Element Geochemistry of Fluvial Deposits (Caculuvar–Mucope, Cunene River Basin, Angola)pt
dc.typearticle-
degois.publication.firstPage384pt
degois.publication.issue9pt
degois.publication.titleGeosciences (Switzerland)pt
dc.peerreviewedyespt
dc.identifier.doi10.3390/geosciences11090384pt
degois.publication.volume11pt
dc.date.embargo2021-01-01*
uc.date.periodoEmbargo0pt
item.grantfulltextopen-
item.fulltextCom Texto completo-
item.openairetypearticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.languageiso639-1en-
crisitem.author.researchunitMARE - Marine and Environmental Sciences Centre-
crisitem.author.researchunitCEGOT – Centre of Studies on Geography and Spatial Planning-
crisitem.author.researchunitMARE - Marine and Environmental Sciences Centre-
crisitem.author.orcid0000-0001-7558-7369-
crisitem.author.orcid0000-0002-1764-0659-
Appears in Collections:I&D MARE - Artigos em Revistas Internacionais
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