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Influence of Sediment Cycling on the Rare-Earth Element Geochemistry of Fluvial Deposits (Caculuvar–Mucope, Cunene River Basin, Angola)
 
 
Article

Patterns and Abundance of Rare Earth Elements in Sediments of a Bedrock River (Miño River, NW Iberian Peninsula)

1
Area of Physical Geography, GEAAT Research Group, Department of History, Art and Geography, University of Vigo, As Lagoas s/n, 32004 Ourense, Spain
2
Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello, 6, 36208 Vigo, Spain
*
Author to whom correspondence should be addressed.
Academic Editors: Pedro Dinis and Jesus Martinez-Frias
Geosciences 2022, 12(3), 105; https://doi.org/10.3390/geosciences12030105
Received: 31 January 2022 / Revised: 16 February 2022 / Accepted: 20 February 2022 / Published: 24 February 2022
(This article belongs to the Special Issue Rare Earth Elements (REEs) in Fluvial Sediments)
Bedrock rivers, whose sedimentary geochemistry has been scarcely investigated, are suitable to test geochemical approaches in order to assess the existence and extent of human alterations in the natural abundance of rare earth elements. This work presents the study of REE contents in fine-grained sediments of the (bedrock) Miño River, in an urban reach of its middle course. Different statistical procedures were employed in order to decipher the abundances and patterns of distribution of REE in different environments, showing a higher REE accumulation in surface sediments trapped by potholes and other rock cavities. Background contents were estimated by iterative simple regression. After checking several possible reference elements, Y showed the highest potential for the series of REE from La to Lu. The regression result, namely background function, is very useful to minimize the effect of the natural variability in sediment contents. Background functions also allow for environmental assessment by the calculation of the so-called local enrichment factors. As a general conclusion, contamination, if it exists, is negligible in the area and low enrichments can be attributed to postdepositional processes related to organic matter and the geochemistry of Fe and Mn. View Full-Text
Keywords: lanthanoids; sediment; bedrock rivers; Miño/Minho River; NW Iberian Peninsula lanthanoids; sediment; bedrock rivers; Miño/Minho River; NW Iberian Peninsula
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MDPI and ACS Style

Álvarez-Vázquez, M.Á.; De Uña-Álvarez, E.; Prego, R. Patterns and Abundance of Rare Earth Elements in Sediments of a Bedrock River (Miño River, NW Iberian Peninsula). Geosciences 2022, 12, 105. https://doi.org/10.3390/geosciences12030105

AMA Style

Álvarez-Vázquez MÁ, De Uña-Álvarez E, Prego R. Patterns and Abundance of Rare Earth Elements in Sediments of a Bedrock River (Miño River, NW Iberian Peninsula). Geosciences. 2022; 12(3):105. https://doi.org/10.3390/geosciences12030105

Chicago/Turabian Style

Álvarez-Vázquez, Miguel Ángel, Elena De Uña-Álvarez, and Ricardo Prego. 2022. "Patterns and Abundance of Rare Earth Elements in Sediments of a Bedrock River (Miño River, NW Iberian Peninsula)" Geosciences 12, no. 3: 105. https://doi.org/10.3390/geosciences12030105

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