globalchange  > 气候减缓与适应
DOI: 10.1016/j.quascirev.2018.09.032
Scopus记录号: 2-s2.0-85054454042
论文题名:
The Last Glacial Maximum extent of the Scandinavian Ice Sheet in the Valday Heights, western Russia: Evidence from cosmogenic surface exposure dating using 10Be
作者: Rinterknecht V.; Hang T.; Gorlach A.; Kohv M.; Kalla K.; Kalm V.; Subetto D.; Bourlès D.; Léanni L.; Guillou V.; ASTER Team
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 200
起始页码: 106
结束页码: 113
语种: 英语
英文关键词: Cosmogenic 10Be ; Late weichselian ; LGM ; NW Russia ; Scandinavian ice sheet ; Valday heights
Scopus关键词: Beryllium compounds ; Geochronology ; Glacial geology ; Glaciers ; Cosmogenic ; Ice sheet ; Late weichselian ; NW Russia ; Valday heights ; Ice
英文摘要: Recent synoptic studies have summarized the former spatial extent and chronology of the last Scandinavian Ice Sheet (SIS) and provide exceptional compilations of empirical datasets. The latter represent the primary source of information for the modelling community to test and develop thermomechanical ice sheet model, which are then further embedded into climatic and general circulation models. The Last Glacial Maximum (LGM) extent and chronology of the SIS across continental Europe were highlighted as being the least well-known thus generating the biggest uncertainties in the reconstruction of the ice sheet. While early geomorphological studies of the ice sheet marginal belts are numerous and detailed in western Russia, geochronological data are virtually inexistent. In an attempt to fill in this gap, we conducted a series of sampling campaigns for surface exposure dating using 10Be in the western and northwestern regions of Russia. We present here the first results from the Valday Heights where glacial deposits constitute well-preserved margins of the SIS. A total of 16 samples firmly establish the timing of the LGM in the Valday Heights at 20.1 ± 0.4 ka. The Valday Heights acted as a natural wall for the last maximum advance of the SIS during MIS2, constraining the eastern flank of the Ladoga-Ilmen-Lovat ice stream to the west of the hills. The Valday Heights were only overran by previously more extensive glacial advances as suggested by older exposure ages obtain on erratic boulders (31.2 ± 1.4 to 47.1 ± 1.5 ka) located east of the LGM limit. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112027
Appears in Collections:气候减缓与适应

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作者单位: Laboratoire de Géographie Physique, CNRS, UMR 8591, Université Paris 1 Panthéon-Sorbonne, Meudon, 92195, France; School of Geography and Geosciences, University of St Andrews, St Andrews, KY16 9AL, United Kingdom; Institute of Ecology and Earth Sciences, University of Tartu, Tartu, 50411, Estonia; Northern Water Problems Institute, Karelian Research Centre of Russian Academy of Sciences, Petrozavodsk, 185030, Russian Federation; Department of Physical Geography and Environment, Pedagogical University, Alexander Herzen State, St. Petersburg, 191186, Russian Federation; Aix Marseille Univ, CNRS, IRD, INRA, Coll France, CEREGE, Aix-en-Provence, France

Recommended Citation:
Rinterknecht V.,Hang T.,Gorlach A.,et al. The Last Glacial Maximum extent of the Scandinavian Ice Sheet in the Valday Heights, western Russia: Evidence from cosmogenic surface exposure dating using 10Be[J]. Quaternary Science Reviews,2018-01-01,200
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