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Late pleistocene in the Vosges and the Krkonoše mountains: correlation of cosmogenic 10Be exposure ages

In: Geografický časopis, vol. 58, no. 1
Régis Braucher - Jan Kalvoda - Didier Bourlès - Erik Brown - Zbyněk Engel - Jean-Luc Mercier
Detaily:
Rok, strany: 2006, 3 - 14
Kľúčové slová:
Late Pleistocene deglaciation, 10Be exposure ages, the Vosges, the Krkonoše Mountains
O článku:
The paper is focused on correlation of Late Pleistocene deglaciation of the Vosges in Eastern France and the Krkonoše Mountains in the Bohemian Massif through measurements of in situ-produced cosmogenic 10Be ages of glacial landforms. The minimum 10Be exposure ages of deglaciation after the last glacial expansion in the eastern flank of the Vosges range from 19.2 ± 2.09 ka to 5.11 ± 1.25 ka and in the Krkonoše Mountains from 27.17 ± 2.26 ka to 4.41 ± 0.52 ka. The results indicate a rapid retreat of glaciers in the Vosges at 10.2 ± 0.45 ka and they do not evidence of significant 10Be exposure ages variations with altitude. In the Krkonoše Mountains the most recent glacial expansion was completed before 13.81 ± 1.29 ka and 12.45 ± 1.68 ka respectively for the Labský důl Valley and the Obří důl Valley. Labský důl Valley deglaciation began on south facing slopes at 995 m a. s. l. 14.37 ± 1.37 ka ago, near terminal moraines at 820 m 13.81 ± 1.29 ka ago and reached the upper end of the cirque (1 275 m) at 10.3 ± 0.86 ka. In the Obří důl Valley cirque, the deglaciation started at 990 m around 12.45 ± 1.68 ka and was completed in the main cirque (1 180 m) at 9.58 ± 1.14 ka. The 10Be exposure ages of deglaciation for both the Vosges and the Krkonoše Mountains appears to be related to the Younger Dryas climate event.
Ako citovať:
ISO 690:
Braucher, R., Kalvoda, J., Bourlès, D., Brown, E., Engel, Z., Mercier, J. 2006. Late pleistocene in the Vosges and the Krkonoše mountains: correlation of cosmogenic 10Be exposure ages. In Geografický časopis, vol. 58, no.1, pp. 3-14. 0016-7193.

APA:
Braucher, R., Kalvoda, J., Bourlès, D., Brown, E., Engel, Z., Mercier, J. (2006). Late pleistocene in the Vosges and the Krkonoše mountains: correlation of cosmogenic 10Be exposure ages. Geografický časopis, 58(1), 3-14. 0016-7193.