Rare earth element distribution and mineralization in Sweden: an application of principal component analysis to FOREGS soil geochemistry
This paper presents results of statistical analyses and spatial interpretations of distributions of rare earth elements (REEs) in Sweden using the Forum of European Geological Surveys (FOREGS) geochemical database of topsoil, subsoil and stream sediment compositions. Raster maps depicting spatial di...
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ftunivtwente:oai:doc.utwente.nl:89505 2023-05-15T17:44:32+02:00 Rare earth element distribution and mineralization in Sweden: an application of principal component analysis to FOREGS soil geochemistry Sadeghi, Martiya Morris, George A. Carranza, Emmanuel John M. Laderberger, Anna Andersson, Madelen 2013 application/pdf http://purl.utwente.nl/publications/89505 unknown Elsevier http://doc.utwente.nl/89505/1/rare.pdf http://purl.utwente.nl/publications/89505 Article / Letter to editor 2013 ftunivtwente 2016-10-26T22:21:05Z This paper presents results of statistical analyses and spatial interpretations of distributions of rare earth elements (REEs) in Sweden using the Forum of European Geological Surveys (FOREGS) geochemical database of topsoil, subsoil and stream sediment compositions. Raster maps depicting spatial distributions of individual REEs were created by interpolation of uni-element data and then principal component (PC) analysis was carried out on the REE data to identify geochemical anomalies associated with bedrock lithology and known mineralizations. The spatial distributions of REEs in Sweden are studied using only the Swedish data subset and the entire European data set. The light rare earth elements (LREEs) La, Ce, Nd and Sm show good correlations among each other but not with Eu. The heavy rare earth elements (HREEs) including Tb, Dy, Ho, Er, Tm, Yb and Lu also show good correlations among each other but not necessarily with the LREE. La, Ce and Nd are the most abundant REEs in all the studied media (topsoils, subsoils and stream sediments), with average median concentrations of 25.3 mg/kg, 53.6 mg/kg and 23.9 mg/kg, respectively. The total explained variances of the first two PCs of each of the REE dataset for topsoils, subsoils, and stream sediments are 95.4%, 95.8% and 95.2%, respectively. Biplots of the first two PCs of each of the REE dataset for topsoils, subsoils, and stream sediments commonly reveal two distinct groupings – HREEs and LREEs – whereas biplots of PC1 versus PC3 of these datasets commonly reveal three distinct groupings – Eu, Ce and other REEs. The main difference between the distribution patterns of LREE and HREE is likely due to enrichment of the LREEs in the Archean bedrock underlying northern Sweden. HREE concentrations in the Archean to Paleoproterozoic metasediments are rather low. Color composites of PC maps produced from the topsoil and subsoil datasets clearly reflect the Archean rocks in northern Sweden and outline the second phase of the Svecokarelian orogen. Article in Journal/Newspaper Northern Sweden University of Twente Publications Dy ENVELOPE(11.369,11.369,64.834,64.834) |
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University of Twente Publications |
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ftunivtwente |
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description |
This paper presents results of statistical analyses and spatial interpretations of distributions of rare earth elements (REEs) in Sweden using the Forum of European Geological Surveys (FOREGS) geochemical database of topsoil, subsoil and stream sediment compositions. Raster maps depicting spatial distributions of individual REEs were created by interpolation of uni-element data and then principal component (PC) analysis was carried out on the REE data to identify geochemical anomalies associated with bedrock lithology and known mineralizations. The spatial distributions of REEs in Sweden are studied using only the Swedish data subset and the entire European data set. The light rare earth elements (LREEs) La, Ce, Nd and Sm show good correlations among each other but not with Eu. The heavy rare earth elements (HREEs) including Tb, Dy, Ho, Er, Tm, Yb and Lu also show good correlations among each other but not necessarily with the LREE. La, Ce and Nd are the most abundant REEs in all the studied media (topsoils, subsoils and stream sediments), with average median concentrations of 25.3 mg/kg, 53.6 mg/kg and 23.9 mg/kg, respectively. The total explained variances of the first two PCs of each of the REE dataset for topsoils, subsoils, and stream sediments are 95.4%, 95.8% and 95.2%, respectively. Biplots of the first two PCs of each of the REE dataset for topsoils, subsoils, and stream sediments commonly reveal two distinct groupings – HREEs and LREEs – whereas biplots of PC1 versus PC3 of these datasets commonly reveal three distinct groupings – Eu, Ce and other REEs. The main difference between the distribution patterns of LREE and HREE is likely due to enrichment of the LREEs in the Archean bedrock underlying northern Sweden. HREE concentrations in the Archean to Paleoproterozoic metasediments are rather low. Color composites of PC maps produced from the topsoil and subsoil datasets clearly reflect the Archean rocks in northern Sweden and outline the second phase of the Svecokarelian orogen. |
format |
Article in Journal/Newspaper |
author |
Sadeghi, Martiya Morris, George A. Carranza, Emmanuel John M. Laderberger, Anna Andersson, Madelen |
spellingShingle |
Sadeghi, Martiya Morris, George A. Carranza, Emmanuel John M. Laderberger, Anna Andersson, Madelen Rare earth element distribution and mineralization in Sweden: an application of principal component analysis to FOREGS soil geochemistry |
author_facet |
Sadeghi, Martiya Morris, George A. Carranza, Emmanuel John M. Laderberger, Anna Andersson, Madelen |
author_sort |
Sadeghi, Martiya |
title |
Rare earth element distribution and mineralization in Sweden: an application of principal component analysis to FOREGS soil geochemistry |
title_short |
Rare earth element distribution and mineralization in Sweden: an application of principal component analysis to FOREGS soil geochemistry |
title_full |
Rare earth element distribution and mineralization in Sweden: an application of principal component analysis to FOREGS soil geochemistry |
title_fullStr |
Rare earth element distribution and mineralization in Sweden: an application of principal component analysis to FOREGS soil geochemistry |
title_full_unstemmed |
Rare earth element distribution and mineralization in Sweden: an application of principal component analysis to FOREGS soil geochemistry |
title_sort |
rare earth element distribution and mineralization in sweden: an application of principal component analysis to foregs soil geochemistry |
publisher |
Elsevier |
publishDate |
2013 |
url |
http://purl.utwente.nl/publications/89505 |
long_lat |
ENVELOPE(11.369,11.369,64.834,64.834) |
geographic |
Dy |
geographic_facet |
Dy |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
http://doc.utwente.nl/89505/1/rare.pdf http://purl.utwente.nl/publications/89505 |
_version_ |
1766146762241736704 |