The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules
The characterization of Last Glacial millennial-timescale warming phases, known as interstadials or Dansgaard–Oeschger events, requires precise chronologies for the study of paleoclimate records. On the European continent, such chronologies are only available for several Last Glacial pollen and rare...
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Columbia University
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ftdatacite:10.7916/d8kh1xj6 2023-05-15T16:00:04+02:00 The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules Moine, Olivier Antoine, Pierre Hatté, Christine Landais, Amaëlle Mathieu, Jérôme Prud’homme, Charlotte Rousseau, Denis-Didier 2017 https://dx.doi.org/10.7916/d8kh1xj6 https://academiccommons.columbia.edu/doi/10.7916/D8KH1XJ6 unknown Columbia University https://dx.doi.org/10.1073/pnas.1614751114 Paleoclimatology Paleopedology Climatic changes Radiocarbon dating Text Articles article-journal ScholarlyArticle 2017 ftdatacite https://doi.org/10.7916/d8kh1xj6 https://doi.org/10.1073/pnas.1614751114 2021-11-05T12:55:41Z The characterization of Last Glacial millennial-timescale warming phases, known as interstadials or Dansgaard–Oeschger events, requires precise chronologies for the study of paleoclimate records. On the European continent, such chronologies are only available for several Last Glacial pollen and rare speleothem archives principally located in the Mediterranean domain. Farther north, in continental lowlands, numerous high-resolution records of loess and paleosols sequences show a consistent environmental response to stadial–interstadial cycles. However, the limited precision and accuracy of luminescence dating methods commonly used in loess deposits preclude exact correlations of paleosol horizons with Greenland interstadials. To overcome this problem, a radiocarbon dating protocol has been developed to date earthworm calcite granules from the reference loess sequence of Nussloch (Germany). Its application yields a consistent radiocarbon chronology of all soil horizons formed between 47 and 20 ka and unambiguously shows the correlation of every Greenland interstadial identified in isotope records with specific soil horizons. Furthermore, eight additional minor soil horizons dated between 27.5 and 21 ka only correlate with minor decreases in Greenland dust records. This dating strategy reveals the high sensitivity of loess paleoenvironments to Northern Hemisphere climate changes. A connection between loess sedimentation rate, Fennoscandian ice sheet dynamics, and sea level changes is proposed. The chronological improvements enabled by the radiocarbon “earthworm clock” thus strongly enhance our understanding of loess records to a better perception of the impact of Last Glacial climate changes on European paleoenvironments. Text Dansgaard-Oeschger events Fennoscandian Greenland Ice Sheet DataCite Metadata Store (German National Library of Science and Technology) Greenland |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
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topic |
Paleoclimatology Paleopedology Climatic changes Radiocarbon dating |
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Paleoclimatology Paleopedology Climatic changes Radiocarbon dating Moine, Olivier Antoine, Pierre Hatté, Christine Landais, Amaëlle Mathieu, Jérôme Prud’homme, Charlotte Rousseau, Denis-Didier The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules |
topic_facet |
Paleoclimatology Paleopedology Climatic changes Radiocarbon dating |
description |
The characterization of Last Glacial millennial-timescale warming phases, known as interstadials or Dansgaard–Oeschger events, requires precise chronologies for the study of paleoclimate records. On the European continent, such chronologies are only available for several Last Glacial pollen and rare speleothem archives principally located in the Mediterranean domain. Farther north, in continental lowlands, numerous high-resolution records of loess and paleosols sequences show a consistent environmental response to stadial–interstadial cycles. However, the limited precision and accuracy of luminescence dating methods commonly used in loess deposits preclude exact correlations of paleosol horizons with Greenland interstadials. To overcome this problem, a radiocarbon dating protocol has been developed to date earthworm calcite granules from the reference loess sequence of Nussloch (Germany). Its application yields a consistent radiocarbon chronology of all soil horizons formed between 47 and 20 ka and unambiguously shows the correlation of every Greenland interstadial identified in isotope records with specific soil horizons. Furthermore, eight additional minor soil horizons dated between 27.5 and 21 ka only correlate with minor decreases in Greenland dust records. This dating strategy reveals the high sensitivity of loess paleoenvironments to Northern Hemisphere climate changes. A connection between loess sedimentation rate, Fennoscandian ice sheet dynamics, and sea level changes is proposed. The chronological improvements enabled by the radiocarbon “earthworm clock” thus strongly enhance our understanding of loess records to a better perception of the impact of Last Glacial climate changes on European paleoenvironments. |
format |
Text |
author |
Moine, Olivier Antoine, Pierre Hatté, Christine Landais, Amaëlle Mathieu, Jérôme Prud’homme, Charlotte Rousseau, Denis-Didier |
author_facet |
Moine, Olivier Antoine, Pierre Hatté, Christine Landais, Amaëlle Mathieu, Jérôme Prud’homme, Charlotte Rousseau, Denis-Didier |
author_sort |
Moine, Olivier |
title |
The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules |
title_short |
The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules |
title_full |
The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules |
title_fullStr |
The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules |
title_full_unstemmed |
The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules |
title_sort |
impact of last glacial climate variability in west-european loess revealed by radiocarbon dating of fossil earthworm granules |
publisher |
Columbia University |
publishDate |
2017 |
url |
https://dx.doi.org/10.7916/d8kh1xj6 https://academiccommons.columbia.edu/doi/10.7916/D8KH1XJ6 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Dansgaard-Oeschger events Fennoscandian Greenland Ice Sheet |
genre_facet |
Dansgaard-Oeschger events Fennoscandian Greenland Ice Sheet |
op_relation |
https://dx.doi.org/10.1073/pnas.1614751114 |
op_doi |
https://doi.org/10.7916/d8kh1xj6 https://doi.org/10.1073/pnas.1614751114 |
_version_ |
1766395938772877312 |