Timing of the last deglaciation in Belarus

  1. VINCENT R. RINTERKNECHT1,
  2. IRINA E. PAVLOVSKAYA2,
  3. PETER U. CLARK3,
  4. GRANT M. RAISBECK4,
  5. FRANCOISE YIOU4,
  6. EDWARD J. BROOK5

Article first published online: 28 JUN 2008

DOI: 10.1111/j.1502-3885.2007.tb01252.x

Issue

Boreas

Boreas

Volume 36, Issue 3, pages 307–313, August 2007

Additional Information

How to Cite

RINTERKNECHT, V. R., PAVLOVSKAYA, I. E., CLARK, P. U., RAISBECK, G. M., YIOU, F. and BROOK, E. J. (2007), Timing of the last deglaciation in Belarus. Boreas, 36: 307–313. doi: 10.1111/j.1502-3885.2007.tb01252.x

Author Information

  1. 1

    (e-mail: vr10@st-andrews.ac.uk), School of Geography and Geosciences, University of St Andrews, Fife KY16 9AL, UK

  2. 2

    National Academy of Sciences of Belarus, Institute of Geological Sciences, 220141 Minsk, Belarus

  3. 3

    Department of Geosciences, Oregon State University, Corvallis, OR 97331–5506, USA

  4. 4

    Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, Bâtiments 104 et 108, 91405 Orsay Campus, France

  5. 5

    Department of Geosciences, Oregon State University, Corvallis, OR 97331–5506, USA

Publication History

  1. Issue published online: 28 JUN 2008
  2. Article first published online: 28 JUN 2008
  3. received 27th February 2006, accepted 31st October 2006

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We measured 10Be concentrations in boulders collected from the Orsha and Braslav moraines, associated with the Last Glacial Maximum extent and a recessional stage of the Scandinavian Ice Sheet (SIS), respectively, providing a direct dating of the southeastern sector of the ice-sheet margin in Belarus. By combining these data with selected existing radiocarbon ages, we developed a chronology for the last deglaciation of Belarus. The northeastern part of the country remained ice free until at least 19.2 ± 0.2 cal. kyr BP, whereas the northwestern part of the country was ice free until 22.3 ± 1.5 cal. kyr BP. A lobate ice margin subsequently advanced to its maximum extent and deposited the Orsha Moraine. The ice margin retreated from this moraine at 17.7 ± 2.0 10Be kyr to a position in the northern part of the country, where it deposited the Braslav Moraine. Subsequent ice-margin retreat from that moraine at 13.1 ± 0.5 10Be kyr represented the final deglaciation of Belarus. Direct dating of these moraines better constrains the relation of ice-margin positions in Belarus to those in adjacent countries as well as the SIS response to climate change.

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