气候变化领域集成服务门户(CCPortal): The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules

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DOI	10.1073/pnas.1614751114
	The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules
	Moine O.; Antoine P.; Hatté C.; Landais A.; Mathieu J.; Prud'homme C.; Rousseau D.-D.
发表日期	2017
ISSN	0027-8424
起始页码	6209
结束页码	6214
卷号	114 期号:24
英文摘要	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.
英文关键词	Earthworm calcite granules; Last glacial loess Europe; Millennial-Timescale climate change; Radiocarbon dating
语种	英语
scopus关键词	calcium carbonate; carbon 14; calcium carbonate; Article; chronology; climate change; fossil animal; Germany; glacier; Greenland; Lumbricus; nonhuman; priority journal; sedimentation rate; soil analysis; animal; chemistry; Europe; fossil; ice cover; metabolism; Oligochaeta; procedures; radiometric dating; soil; Animals; Calcium Carbonate; Climate Change; Europe; Fossils; Greenland; Ice Cover; Oligochaeta; Radiometric Dating; Soil
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159061
作者单位	Moine, O., Laboratoire de Géographie Physique, Environnements Quaternaires et Actuels, Centre National de la Recherche Scientifique (CNRS), Université Paris-Est-Créteil-Val-de-Marne (UPEC), Meudon, 92195, France; Antoine, P., Laboratoire de Géographie Physique, Environnements Quaternaires et Actuels, Centre National de la Recherche Scientifique (CNRS), Université Paris-Est-Créteil-Val-de-Marne (UPEC), Meudon, 92195, France; Hatté, C., Laboratoire des Sciences Du Climat et de L'Environnement (LSCE), Commissariat à L'Énergie Atomique et Aux ÉNergies Alternatives, Université de Versailles-Saint-Quentin-en-Yvelines, Gif-sur-Yvette, 91198, France; Landais, A., Laboratoire des Sciences Du Climat et de L'Environnement (LSCE), Commissariat à L'Énergie Atomique et Aux ÉNergies Alternatives, Université de Versailles-Saint-Quentin-en-Yvelines, Gif-sur-Yvette, 91198, France; Mathieu, J., Institut National de la Recherche Agronomique, Université Pierre-et-Marie-Curie (UPMC), Sorbonne Universités, Paris, 75005, France;...
推荐引用方式 GB/T 7714	Moine O.,Antoine P.,Hatté C.,et al. The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules[J],2017,114(24).
APA	Moine O..,Antoine P..,Hatté C..,Landais A..,Mathieu J..,...&Rousseau D.-D..(2017).The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules.Proceedings of the National Academy of Sciences of the United States of America,114(24).
MLA	Moine O.,et al."The impact of Last Glacial climate variability in west-European loess revealed by radiocarbon dating of fossil earthworm granules".Proceedings of the National Academy of Sciences of the United States of America 114.24(2017).