globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2015.07.015
Scopus记录号: 2-s2.0-84938118500
论文题名:
Geomorphological evidence and 10Be exposure ages for the Last Glacial Maximum and deglaciation of the Velká and Malá Studená dolina valleys in the High Tatra Mountains, central Europe
作者: Engel Z.; Mentlík P.; Braucher Ré.; Minár J.; Léanni L.; Arnold M.; Aumaître G.; Bourlès D.; Keddadouche K.; Aster Team
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 124
起始页码: 106
结束页码: 123
语种: 英语
英文关键词: Glaciation chronology ; Glacier retreat ; High Tatra Mts. ; Paraglacial ; Quaternary ; Thinning rate ; Western Carpathians
Scopus关键词: Geochronology ; Landforms ; Rock bursts ; Glaciation chronology ; Glacier retreat ; High Tatra Mts ; Paraglacial ; Quaternary ; Western carpathians ; Glacial geology ; bedrock ; dating method ; deglaciation ; forest canopy ; geochronology ; geomorphological response ; glaciation ; glacier retreat ; Last Glacial Maximum ; moraine ; Quaternary ; rockfall ; thinning ; uncertainty analysis ; valley ; Alps ; Bavaria ; Bohemia ; Carpathians ; Czech Republic ; Germany ; Tatra Mountains
英文摘要: 10Be exposure age chronology of the last glaciation was established in a key area at the southern slopes of the High Tatra Mts., Western Carpathians. In-situ produced 10Be in moraine boulders, glacially transformed bedrock surfaces and rockfall accumulations constrains the timing of the Last Glacial Maximum (LGM) glacier expansion and provides chronological evidence for the post-LGM decay of one of the largest paleoglaciers in the range. The uncertainty-weighted mean age of 22.0±0.8ka obtained for the terminal moraine in the forefield of the Velká Studená dolina Valley indicates that the oldest moraine was deposited close to the global LGM. This finding confirms that well-preserved moraines in the range were formed during the last glacial cycle and that glaciation on the southern flank of the range was more extensive than earlier in the last glacial cycle. The maximum glacier extent correlates with late Würmian/Weichselian glacier phases in the Alps, the Bavarian/Bohemian Forest and the Krkonoše Mts., but probably postdates the period of maximum glaciation in the Southern Carpathians. Re-advance moraines at the mouth of the Velká Studená dolina Valley and in the middle part of the Malá Studená dolina Valley were deposited no later than around 20.5ka and 15.5ka, respectively. The timing of these advances is broadly synchronous within the High Tatra Mts. as well as with glacier obtained from glacially transformed bedrock surfaces range between 20.5±1.7ka and 10.7±0.3ka constraining the onset and the final phase of the deglaciation. Surface exposure dating of four rockfall accumulations produced uncertainty-weighted mean ages of 20.2±1.2ka, 17.0±0.7ka, 16.5±0.4ka and 15.6±0.7ka. These ages indicate that activation of rock-slope failures occurred under paraglacial conditions within a few centuries up to 1400 years after the formation of re-advance moraines. © 2015 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59847
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作者单位: Department of Physical Geography and Geoecology, Faculty of Science, Charles University in Prague, Albertov 6, Praha, Czech Republic; Center of Biology, Geoscience and Environmental Education, University of West Bohemia, Klatovská 51, Plzeň, Czech Republic; Centre Européen de Recherche et d'Enseignement en Géosciences de l'Environnement, Aix-Marseille Université, CNRS-IRD UM 34, Aix-en-Provence Cedex 4, France; Department of Physical Geography and Geoecology, Faculty of Natural Sciences, Comenius University, Mlynská dolina B1, Bratislava, Slovakia

Recommended Citation:
Engel Z.,Mentlík P.,Braucher Ré.,et al. Geomorphological evidence and 10Be exposure ages for the Last Glacial Maximum and deglaciation of the Velká and Malá Studená dolina valleys in the High Tatra Mountains, central Europe[J]. Quaternary Science Reviews,2015-01-01,124
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