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Functional data analysis as a tool to correlate textural and geochemical data
ArticleAbstract: This paper discusses the use of functional data analysis to determine the interactions between the cPalabras claves:Element concentration, functional data analysis, Granulometric curveAutores:Albuquerque T., Carlos Sierra, Gallego J.R., Ordóñez C.Fuentes:scopusFunctional outlier detection in grain-size distribution curves of detrital sediments
ArticleAbstract: This article introduces functional outlier detection as a mathematical tool for the recognition of oPalabras claves:Coastal sediments, Functional bagplot, Functional high density region (HDR) boxplot, Grain-size curves, outlier detectionAutores:Carlos Sierra, Gallego J.R., Ordóñez C.Fuentes:scopusGeochemical composition of beach tar from the se coast of the paria peninsula, ne venezuela: Derivation from natural seepages
ArticleAbstract: Tar residues ("tarballs") occur frequently on the SE coast of the Paria Peninsula, NE Venezuela. ThiPalabras claves:Gulf of Paria, Los Bajos fault, Marine seepages, Naparima Hill Formation, organic geochemistry, Seepage oils, Tarballs, Trinidad, VENEZUELAAutores:Carlos Sierra, De Freitas K.A., Érica Lorenzo, Escobar M., Fernàndez R., Galarraga F., Gallego J.R., Gonzalo MárquezFuentes:scopusGeochemistry and chemostratigraphy of the Colón -mito juan units (campanian-maastrichtian), Venezuela: Implications for provenance, depositional conditions, and stratigraphic subdivision
ArticleAbstract: A geochemical and chemostratigraphical study was undertaken on Campanian-Maastrichtian sedimentary rPalabras claves:Chemostratigraphy, Colón -mito juan sequence, geochemistry, Lake maracaibo, Stratigraphic subdivisionAutores:Carlos Sierra, Escobar M., Esteves I.H., Gallego J.R., Gonzalo Márquez, Gutiérrez J.V., Manuel Martínez, Montilla L.Fuentes:scopusGrade control in a quartz deposit using universal fuzzy kriging
ArticleAbstract: We adapt the universal kriging method of pbkp_rediction to contexts with uncertainty and imprecise dPalabras claves:3D model, Fuzzy number, Quartz quality, Selective mining, universal krigingAutores:Carlos Sierra, Castro J.T., Galán C.O., González A.S., Pérez E.G.Fuentes:scopusMultivariate study of trace element distribution in the geological record of Roñanzas Peat Bog (Asturias, N. Spain). Paleoenvironmental evolution and human activities over the last 8000calyr BP
ArticleAbstract: Trace element concentrations in the Roñanzas peat bog record reveal a contribution of natural procesPalabras claves:Multivariate statistics, Northern Spain, Peat bog, Pollution, Trace elementsAutores:Carlos Sierra, Gallego J.R., Llamas J.F., Ortiz J.E., Torres T.Fuentes:scopusNanofiltration of acid mine drainage in an abandoned mercury mining area
ArticleAbstract: In Asturias (north of Spain), mercury mining has been identified as a potential source of trace elemPalabras claves:Acid mine drainage, Arsenic pollution, Mercury mining, nanofiltrationAutores:Álvarez Saiz J.R., Carlos Sierra, Gallego J.R.Fuentes:scopusHigh intensity magnetic separation for the clean-up of a site polluted by lead metallurgy
ArticleAbstract: The industrial history in the district of Linares (Spain) has had a severe impact on soil quality. HPalabras claves:lead, magnetic separation, Slag, soil pollution, soil washingAutores:Afif E., Carlos Sierra, Gallego J.R., J. M. Menéndez-Aguado, Martínez J.Fuentes:scopus