Geochemical signature of last glacial maximum European loess samples
Fuente:
PANGAEA
Enregistré dans:
| Auteurs principaux: | , , , , , , , |
|---|---|
| Format: | Dataset Open Access |
| Langue: | en |
| Publié: |
PANGAEA
2025
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1867167682965536768 |
|---|---|
| author | Rousseau, Denis-Didier Chauvel, Catherine Hopcroft, Peter Gutiérrez, Pamela Saulnier-Copard, Ségolène Antoine, Pierre Fuchs, Markus Ustrzycka, Alicja |
| author_facet | Rousseau, Denis-Didier Chauvel, Catherine Hopcroft, Peter Gutiérrez, Pamela Saulnier-Copard, Ségolène Antoine, Pierre Fuchs, Markus Ustrzycka, Alicja |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | In a previous analysis of bulk sediment from Last Glacial Maximum loess deposits over Europe, a local to regional origin of the deposited material has been demonstrated (Rousseau et al., 2014). In a refined study, the same European sequences have been analyzed studying the trace elements and the strontium and lead isotopic ratios from different grain-size fractions: <2 micron, 2-20 micron and bulk. The later was reanalyzed to compare with the previous study. First the new bulk values are similar to the previously published ones. Furthermore, the results show that the <2 micron fraction is different than the 2-20 micron or bulk ones when comparing the trace element. Second, the 87Sr/86Sr vs 208Pb/204Pb diagram shows that the sequences analyzed keep their regional to local signature, mainly along the 87Sr/86Sr axis for the 2-20 micron and bulk samples. On the contrary, the <2 micron samples are all grouped in a well identified cluster clearly indicating a different source and even a different transport. The comparison of the results of the geochemical analysis with climate modeling of dust transport at LGM supports this interpretation. The datasets correspond to i) the code and geographical coordinates, ii) the trace element contents for the <2 micron, 2-20 micron and bulk fractions, iii) the Sr-Pb isotopic ratios for the <2 micron, 2-20 micron and bulk fractions, and iv) the grain size composition of the studied LGM European loess samples. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_971902 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemical signature of last glacial maximum European loess samples Rousseau, Denis-Didier Chauvel, Catherine Hopcroft, Peter Gutiérrez, Pamela Saulnier-Copard, Ségolène Antoine, Pierre Fuchs, Markus Ustrzycka, Alicja dust source; dust transport; European loess deposits; Last Glacial Maximum; trace elements In a previous analysis of bulk sediment from Last Glacial Maximum loess deposits over Europe, a local to regional origin of the deposited material has been demonstrated (Rousseau et al., 2014). In a refined study, the same European sequences have been analyzed studying the trace elements and the strontium and lead isotopic ratios from different grain-size fractions: <2 micron, 2-20 micron and bulk. The later was reanalyzed to compare with the previous study. First the new bulk values are similar to the previously published ones. Furthermore, the results show that the <2 micron fraction is different than the 2-20 micron or bulk ones when comparing the trace element. Second, the 87Sr/86Sr vs 208Pb/204Pb diagram shows that the sequences analyzed keep their regional to local signature, mainly along the 87Sr/86Sr axis for the 2-20 micron and bulk samples. On the contrary, the <2 micron samples are all grouped in a well identified cluster clearly indicating a different source and even a different transport. The comparison of the results of the geochemical analysis with climate modeling of dust transport at LGM supports this interpretation. The datasets correspond to i) the code and geographical coordinates, ii) the trace element contents for the <2 micron, 2-20 micron and bulk fractions, iii) the Sr-Pb isotopic ratios for the <2 micron, 2-20 micron and bulk fractions, and iv) the grain size composition of the studied LGM European loess samples. |
| title | Geochemical signature of last glacial maximum European loess samples |
| topic | dust source; dust transport; European loess deposits; Last Glacial Maximum; trace elements |
| url | https://doi.org/10.1594/PANGAEA.971902 |