Deglaciation chronology and paleoclimate of the Pie{ogonek}ciu Stawów Polskich/Roztoki Valley, high Tatra Mountains, Western Carpathians, since the Last Glacial Maximum, inferred from 36Cl exposure dating and glacier-climate modelling

Michał Makos, Jerzy Nitychoruk, Marek G Zreda

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42 Citations (Scopus)

Abstract

Exposure dating of abraded bedrock surfaces below glacial trimlines in the Pie{ogonek}ciu Stawów Polskich/Roztoki Valley, using cosmogenic 36Cl, has been applied to determine the deglaciation chronology in the study area. Nineteen rock samples yielded ages between 21.5 and 9.5ka. The spatial distribution of ages provides evidence of progressive downwasting of glaciers within the study area. Dates of exposure indicate that the onset of ice volume decrease occurred no later than 21.5ka. This provides evidence that the local maximum glaciation occurred in accordance with the global Last Glacial Maximum (LGM). The first period of deglaciation in the study area was completed around 18ka. Further significant loss of ice volume is confirmed between 15 and 13ka. The spatial distribution of chronological data within the Pie{ogonek}ciu Stawów Polskich Valley indicates post-LGM readvances of glaciers around 17ka and 12ka. Using the glacier modelling and paleoclimate proxies from the study area, the early Late Glacial glacier had been stable with a 9-10°C decrease in temperature and 30-50% lower precipitation in relation to modern conditions. The subsequent advance took place with temperatures 6-7°C lower and 10-30% less precipitation. The timing of the readvances is nearly synchronous with Late Glacial advances in the European Alps, Southern Carpathians and Anatolian peninsula. This suggests synchronicity of major climatic fluctuations across Central Europe and the northern margin of the Mediterranean Basin.

Original languageEnglish (US)
Pages (from-to)63-78
Number of pages16
JournalQuaternary International
Volume293
DOIs
StatePublished - Apr 19 2013

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deglaciation
Last Glacial Maximum
paleoclimate
chronology
climate modeling
glacier
valley
late glacial
spatial distribution
ice
glaciation
bedrock
temperature
exposure
high mountain
dating
basin
rock
modeling

ASJC Scopus subject areas

  • Earth-Surface Processes

Cite this

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title = "Deglaciation chronology and paleoclimate of the Pie{ogonek}ciu Staw{\'o}w Polskich/Roztoki Valley, high Tatra Mountains, Western Carpathians, since the Last Glacial Maximum, inferred from 36Cl exposure dating and glacier-climate modelling",
abstract = "Exposure dating of abraded bedrock surfaces below glacial trimlines in the Pie{ogonek}ciu Staw{\'o}w Polskich/Roztoki Valley, using cosmogenic 36Cl, has been applied to determine the deglaciation chronology in the study area. Nineteen rock samples yielded ages between 21.5 and 9.5ka. The spatial distribution of ages provides evidence of progressive downwasting of glaciers within the study area. Dates of exposure indicate that the onset of ice volume decrease occurred no later than 21.5ka. This provides evidence that the local maximum glaciation occurred in accordance with the global Last Glacial Maximum (LGM). The first period of deglaciation in the study area was completed around 18ka. Further significant loss of ice volume is confirmed between 15 and 13ka. The spatial distribution of chronological data within the Pie{ogonek}ciu Staw{\'o}w Polskich Valley indicates post-LGM readvances of glaciers around 17ka and 12ka. Using the glacier modelling and paleoclimate proxies from the study area, the early Late Glacial glacier had been stable with a 9-10°C decrease in temperature and 30-50{\%} lower precipitation in relation to modern conditions. The subsequent advance took place with temperatures 6-7°C lower and 10-30{\%} less precipitation. The timing of the readvances is nearly synchronous with Late Glacial advances in the European Alps, Southern Carpathians and Anatolian peninsula. This suggests synchronicity of major climatic fluctuations across Central Europe and the northern margin of the Mediterranean Basin.",
author = "Michał Makos and Jerzy Nitychoruk and Zreda, {Marek G}",
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AU - Makos, Michał

AU - Nitychoruk, Jerzy

AU - Zreda, Marek G

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N2 - Exposure dating of abraded bedrock surfaces below glacial trimlines in the Pie{ogonek}ciu Stawów Polskich/Roztoki Valley, using cosmogenic 36Cl, has been applied to determine the deglaciation chronology in the study area. Nineteen rock samples yielded ages between 21.5 and 9.5ka. The spatial distribution of ages provides evidence of progressive downwasting of glaciers within the study area. Dates of exposure indicate that the onset of ice volume decrease occurred no later than 21.5ka. This provides evidence that the local maximum glaciation occurred in accordance with the global Last Glacial Maximum (LGM). The first period of deglaciation in the study area was completed around 18ka. Further significant loss of ice volume is confirmed between 15 and 13ka. The spatial distribution of chronological data within the Pie{ogonek}ciu Stawów Polskich Valley indicates post-LGM readvances of glaciers around 17ka and 12ka. Using the glacier modelling and paleoclimate proxies from the study area, the early Late Glacial glacier had been stable with a 9-10°C decrease in temperature and 30-50% lower precipitation in relation to modern conditions. The subsequent advance took place with temperatures 6-7°C lower and 10-30% less precipitation. The timing of the readvances is nearly synchronous with Late Glacial advances in the European Alps, Southern Carpathians and Anatolian peninsula. This suggests synchronicity of major climatic fluctuations across Central Europe and the northern margin of the Mediterranean Basin.

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