globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2017.07.019
论文题名:
OSL chronologies of paleoenvironmental dynamics recorded by loess-paleosol sequences from Europe: Case studies from the Rhine-Meuse area and the Neckar Basin
作者: Zens J.; Schulte P.; Klasen N.; Krauß L.; Pirson S.; Burow C.; Brill D.; Eckmeier E.; Kels H.; Zeeden C.; Spagna P.; Lehmkuhl F.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
语种: 英语
英文关键词: Aeolian deposits ; Chronostratigraphy ; Erosion ; Grain-size analysis ; PIRIR290 ; Weichselian Glacial
英文摘要: Loess-paleosol sequences (LPS) represent an important terrestrial archive for the reconstruction of the paleoenvironmental evolution during the Last Glacial cycle in Europe. In the Rhine-Meuse area and the southwestern Germany, there are only few numerical ages determined with state-of-the-art luminescence methods, which limits the robustness of established chronostratigraphies. This study presents a comparative dating approach using quartz and feldspar post-infrared (pIRIR290) optically stimulated luminescence (OSL) from fine- and medium-grained samples of five loess-paleosol sequences. Paleoenvironmental dynamics are reconstructed by high-resolution grain-size analysis.The OSL ages are evaluated as being robust and consistent with other records. Furthermore, we show that ages for hillslope deposits are sometimes overestimated due to low-frequency high-magnitude erosive processes. The integration of OSL ages, stratigraphy and high-resolution grain-size data contributes to a temporal more complete data record from Western and Central Europe. Secondly, we propose a combined stratigraphic model for LPS of the Last Glacial cycle, which is developed and discussed in the context of other key sites such as Havrincourt, Schwalbenberg II, Tönchesberg, Nussloch and Dolni Věstonice. Comparable chronologies and patterns in proxy data between sites with a large spatial distance suggest a possible semi-synchronous response to climatic changes in Europe. By combining our data with the Eifel-Laminated-Sediment-Archive (ELSA) and the NGRIP ice core, a relationship of loess archives and large-scale climatic signals is discussed and a proxydata based event-stratigraphy is developed. This model refines existing chronostratigraphic models and contributes to solve open discussion concerning the timing and demarcation of sedimentary units and sequences from for Western and Central Europe. © 2017.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68074
Appears in Collections:过去全球变化的重建

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作者单位: Department of Geography, RWTH Aachen University, Templergraben 55, 52056 Aachen, Germany; Institute of Geography, University of Cologne, Albertus-Magnus-Platz, D-50923 Cologne, Germany; Direction de l'archéologie, Service public de Wallonie, Rue des Brigades d'Irlande, 1, B-5100 Jambes, Belgium; Earth and Life History Operational Division, Royal Belgian Institute of Natural Sciences, Vautier Street, 29, B-1000 Brussels, Belgium; Department of Geography, Ludwig-Maximilians-University Munich, Luisenstraße 37, D-80333 Munich, Germany

Recommended Citation:
Zens J.,Schulte P.,Klasen N.,et al. OSL chronologies of paleoenvironmental dynamics recorded by loess-paleosol sequences from Europe: Case studies from the Rhine-Meuse area and the Neckar Basin[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01
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