Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries

12 pages, 5 figures, 2 tables

Detalles Bibliográficos
Autores: Prego, R., Brito, Pedro, Álvarez-Vázquez, M. A., Caetano, Miguel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/180617
Acceso en línea:http://hdl.handle.net/10261/180617
Access Level:acceso abierto
Palabra clave:Minho River
Rare earth elements
Sediment
Tracer
Tributary
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oai_identifier_str oai:digital.csic.es:10261/180617
network_acronym_str ES
network_name_str España
repository_id_str
spelling Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributariesPrego, R.Brito, PedroÁlvarez-Vázquez, M. A.Caetano, MiguelMinho RiverRare earth elementsSedimentTracerTributary12 pages, 5 figures, 2 tables[Purpose] Rare earth elements have been used as sediment tracers in river, estuarine and coastal environments but rarely applied as fluvial tributary tracers. Lanthanides (Ln) and yttrium (Y) were quantified in fluvial sediments of the Minho River lower course (NW Iberian Peninsula), where the catchment contains heterogeneous lithologies, to define the characteristic imprints of tributaries and their relevance in the riverine system. [Materials and methods] Surface sediments were sampled at 36 points in the lower Minho riverbed and its nine main tributaries.The < 2-mm fraction was sieved and ground, and ≈ 100 mg was completely acid-digested with HF and aqua regia in closed Teflon bombs at 100 °C for 1 h. The residue was evaporated, re-dissolved with HNO3 and Milli-Q water, heated 20 min at 75 °C and diluted to 50 cm3 with Milli-Q water. Lanthanides and yttrium were determined using a quadrupole ICP-MS equipped with a Peltier impact bead spray chamber and a concentric Meinhard nebuliser. Blanks accounted for less than 1% of the element concentrations in the samples. The precision and accuracy of the analytical procedures were controlled through reference materials AGV-1 and MAG-1. [Results and discussion] Contents ranged from 22 to 153 mg Ln kg−1 and 1.5–22.9 mg Y kg−1 and ES-normalised light-heavy Ln fractionation, (LN/HN), varied between 0.6 and 2.6. These wide ranges, together with Eu and Ce anomalies and element-by-element Ln, varied with changes in parental rocks of the lower Minho basin. Minho sediments showed negative Ce anomalies (0.81 ± 0.29) and positive Eu anomalies (1.23 ± 0.18). Sediments received traces of granitic pegmatites and gneissic peralkaline rocks from two tributaries: the Gadanha (22.9 mg Y kg−1; 83 mg Ln kg−1; 0.60 LN/HN; 0.51 Eu/Eu*; 0.88 Ce/Ce*) and the Louro (15.9 mg Y kg−1; 110 mg Lnkg−1; 0.97 LN/HN; 0.69 Eu/Eu*; 1.49 Ce/Ce*). The Tamuxe tributary, flowing through a slate and quartzite fault, provided the lowest source (1.6 mg Y kg−1; 28 mg Ln kg−1; 2.48 LN/HN; 1.01 Eu/Eu*; 0.55 Ce/Ce*). [Conclusions] Lanthanide and Y signatures in sediments may be used to trace land-tributary-river influences. The imprints are observed downstream of fluvial confluences but not in all cases, responding to basin lithological changes, particularly for pegmatites and peralkaline rocks. The general REE trend is described using Y contents only. Tributaries, which are responsible for one-fifth of the Minho water load, provide one-half of their sediments. Non-homogeneous sediment patterns may be magnified in dammed rivers such as the MinhoThis study was supported by the REEuse research project, ref. PTDC/QEQ-EPR/1249/2014 financed by the Portuguese “Fundação para a Ciência e Tecnologia” and the “Xunta de Galicia” for the ‘Support to Competitive Reference Groups’ ref. IN607A-2016/11Peer reviewedSpringer NatureFundação para a Ciência e a Tecnologia (Portugal)Xunta de GaliciaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/180617reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésThe underlying dataset has been published as supplementary material of the article in the publishers platform at DOI https://doi.org/10.1007/s11368-019-02271-0https://doi.org/10.1007/s11368-019-02271-0Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1806172026-05-22T06:33:51Z
dc.title.none.fl_str_mv Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries
title Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries
spellingShingle Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries
Prego, R.
Minho River
Rare earth elements
Sediment
Tracer
Tributary
title_short Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries
title_full Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries
title_fullStr Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries
title_full_unstemmed Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries
title_sort Lanthanides and yttrium in the sediments of the lower Minho River (NW Iberian Peninsula): imprint of tributaries
dc.creator.none.fl_str_mv Prego, R.
Brito, Pedro
Álvarez-Vázquez, M. A.
Caetano, Miguel
author Prego, R.
author_facet Prego, R.
Brito, Pedro
Álvarez-Vázquez, M. A.
Caetano, Miguel
author_role author
author2 Brito, Pedro
Álvarez-Vázquez, M. A.
Caetano, Miguel
author2_role author
author
author
dc.contributor.none.fl_str_mv Fundação para a Ciência e a Tecnologia (Portugal)
Xunta de Galicia
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Minho River
Rare earth elements
Sediment
Tracer
Tributary
topic Minho River
Rare earth elements
Sediment
Tracer
Tributary
description 12 pages, 5 figures, 2 tables
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/180617
url http://hdl.handle.net/10261/180617
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv The underlying dataset has been published as supplementary material of the article in the publishers platform at DOI https://doi.org/10.1007/s11368-019-02271-0
https://doi.org/10.1007/s11368-019-02271-0
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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