Sedimentary environment, lithostratigraphy and dating of sediment sequences from Arctic lakes Revvatnet and Svartvatnet in Hornsund, Svalbard
Ojala, A. E., Arppe, L., Luoto, T., Wacker, L., Kurki, E., Zajączkowski, M., Pawłowska, J., Damrat, M., & Oksman, M. (2016). Sedimentary environment, lithostratigraphy and dating of sediment sequences from Arctic lakes Revvatnet and Svartvatnet in Hornsund, Svalbard. Polish Polar Research, 37(1), 23-48. https://doi.org/10.1515/popore-2016-0005
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Polish Polar ResearchAuthors
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2016Copyright
© the Authors, 2016. This is an open access article publisher under the terms of the Creative Commons Attribution-Non-Commercial-NoDerivs license.
The sedimentary environment, sediment characteristics and age−depth models of
sediment sequences from Arctic lakes Revvatnet and Svartvatnet, located near the Polish
Polar Station in Hornsund, southern Svalbard (77N), were studied with a view to establish−
ing a basis for paleolimnological climate and environmental reconstructions. The results in−
dicate that catchment−to−lake hydroclimatic processes probably affect the transportation,
distribution and accumulation of sediments in different parts of lakes Revvatnet and
Svartvatnet. Locations with continuous and essentially stable sedimentary environments
were found in both lakes between water depths of 9 and 26 m. We used several different dat−
ing techniques, including 137Cs, 210Pb, AMS 14C, and paleomagnetic dating, to provide ac−
curate and secured sediment chronologies. A recovered sequence from the northern basin of
Revvatnet spans more than one thousand years long with laminated stratigraphy in the up−
per part of the sediment. Based on AMS 14C dates, it is possible to suppose that Revvatnet basin was not occupied by a valley glacier during the Little Ice Age. The dates were sup−
ported by 137Cs chronologies, but not confirmed with other independent dating methods that
extent beyond the last 50 years. A sedimentary sequence from the northern basin of
Svartvatnet provides a potential archive for the study of climate and environmental change
for the last ca. 5000 years. Based on the stratigraphy and a Bayesian age−depth model of
AMS 14C and paleosecular variation (PSV) dates, the recovered sediment sections represent
a continuous and stable sedimentation for the latter half of the Holocene.
...
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Polish Academy of Sciences; Walter de Gruyter GmbHISSN Search the Publication Forum
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Except where otherwise noted, this item's license is described as © the Authors, 2016. This is an open access article publisher under the terms of the Creative Commons Attribution-Non-Commercial-NoDerivs license.
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