High‐resolution X‐ray fluorescence core scanning analysis of Les Echets (France) sedimentary sequence: new insights from chemical proxies
Abstract The Les Echets sediment sequence has recently been the subject of a high‐resolution, multi‐proxy study which revealed shifts in lake productivity linked to Greenland stadials and interstadials over the last 40 ka (Wohlfarth et al. , 2008 . Rapid ecosystem response to abrupt climate changes...
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crwiley:10.1002/jqs.1438 2024-10-13T14:07:47+00:00 High‐resolution X‐ray fluorescence core scanning analysis of Les Echets (France) sedimentary sequence: new insights from chemical proxies Kylander, Malin E. Ampel, Linda Wohlfarth, Barbara Veres, Daniel 2011 http://dx.doi.org/10.1002/jqs.1438 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1438 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1438 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 26, issue 1, page 109-117 ISSN 0267-8179 1099-1417 journal-article 2011 crwiley https://doi.org/10.1002/jqs.1438 2024-09-19T04:19:21Z Abstract The Les Echets sediment sequence has recently been the subject of a high‐resolution, multi‐proxy study which revealed shifts in lake productivity linked to Greenland stadials and interstadials over the last 40 ka (Wohlfarth et al. , 2008 . Rapid ecosystem response to abrupt climate changes during the last glacial period in western Europe, 40–16 ka. Geology 36 : 407–410). Here we present new elemental data for this sequence as acquired using an X‐ray fluorescence core scanning system which provides in situ high‐resolution, continuous, multi‐element analyses. It was found that the strength of associations between the studied elements (Ti, Rb, K, Zr, Si, Ca, Sr, Mn and Fe) varied over time with changes in lake status which are ultimately driven by changes in climate. Increases in fine‐grained, detrital input (as indicated by Ti, Rb, K and Zr/Rb) overlap with independently established periods of lower lake productivity and are interpreted to represent more arid conditions. Several of these arid periods are coincident with low diatom concentrations and the timing of Heinrich events H4, H3 and H2. The duration of the environmental impacts linked to the H events varied by proxy with elemental data (Ti and Zr/Rb) estimating shorter events than the diatom data. Periods of lower detrital input and coarser grain sizes agreed in time with periods of higher lake productivity. The elemental data provide new insights into hydrological changes and related sediment processes within the catchment, and highlight the need for multi‐element and multi‐proxy approaches when reconstructing climate change using lacustrine sediment sequences. Copyright © 2011 John Wiley & Sons, Ltd. Article in Journal/Newspaper Greenland Wiley Online Library Greenland Lower Lake ENVELOPE(-129.290,-129.290,53.428,53.428) Journal of Quaternary Science 26 1 109 117 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The Les Echets sediment sequence has recently been the subject of a high‐resolution, multi‐proxy study which revealed shifts in lake productivity linked to Greenland stadials and interstadials over the last 40 ka (Wohlfarth et al. , 2008 . Rapid ecosystem response to abrupt climate changes during the last glacial period in western Europe, 40–16 ka. Geology 36 : 407–410). Here we present new elemental data for this sequence as acquired using an X‐ray fluorescence core scanning system which provides in situ high‐resolution, continuous, multi‐element analyses. It was found that the strength of associations between the studied elements (Ti, Rb, K, Zr, Si, Ca, Sr, Mn and Fe) varied over time with changes in lake status which are ultimately driven by changes in climate. Increases in fine‐grained, detrital input (as indicated by Ti, Rb, K and Zr/Rb) overlap with independently established periods of lower lake productivity and are interpreted to represent more arid conditions. Several of these arid periods are coincident with low diatom concentrations and the timing of Heinrich events H4, H3 and H2. The duration of the environmental impacts linked to the H events varied by proxy with elemental data (Ti and Zr/Rb) estimating shorter events than the diatom data. Periods of lower detrital input and coarser grain sizes agreed in time with periods of higher lake productivity. The elemental data provide new insights into hydrological changes and related sediment processes within the catchment, and highlight the need for multi‐element and multi‐proxy approaches when reconstructing climate change using lacustrine sediment sequences. Copyright © 2011 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Kylander, Malin E. Ampel, Linda Wohlfarth, Barbara Veres, Daniel |
spellingShingle |
Kylander, Malin E. Ampel, Linda Wohlfarth, Barbara Veres, Daniel High‐resolution X‐ray fluorescence core scanning analysis of Les Echets (France) sedimentary sequence: new insights from chemical proxies |
author_facet |
Kylander, Malin E. Ampel, Linda Wohlfarth, Barbara Veres, Daniel |
author_sort |
Kylander, Malin E. |
title |
High‐resolution X‐ray fluorescence core scanning analysis of Les Echets (France) sedimentary sequence: new insights from chemical proxies |
title_short |
High‐resolution X‐ray fluorescence core scanning analysis of Les Echets (France) sedimentary sequence: new insights from chemical proxies |
title_full |
High‐resolution X‐ray fluorescence core scanning analysis of Les Echets (France) sedimentary sequence: new insights from chemical proxies |
title_fullStr |
High‐resolution X‐ray fluorescence core scanning analysis of Les Echets (France) sedimentary sequence: new insights from chemical proxies |
title_full_unstemmed |
High‐resolution X‐ray fluorescence core scanning analysis of Les Echets (France) sedimentary sequence: new insights from chemical proxies |
title_sort |
high‐resolution x‐ray fluorescence core scanning analysis of les echets (france) sedimentary sequence: new insights from chemical proxies |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1002/jqs.1438 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1438 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1438 |
long_lat |
ENVELOPE(-129.290,-129.290,53.428,53.428) |
geographic |
Greenland Lower Lake |
geographic_facet |
Greenland Lower Lake |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Journal of Quaternary Science volume 26, issue 1, page 109-117 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.1438 |
container_title |
Journal of Quaternary Science |
container_volume |
26 |
container_issue |
1 |
container_start_page |
109 |
op_container_end_page |
117 |
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1812814315272536064 |