10Be dating of Younger Dryas Salpausselkä I formation in Finland
Boulders of the Younger Dryas Salpausselkä I (Ss I) formation west of Lahti, southern Finland, were sampled for surface exposure dating. The 10 Be concentrations, determined by accelerator mass spectrometry, yield minimum exposure ages of 11 930 ± 950, 11 220 ± 890, 11 050 ± 910 and 11 540 ± 990 yea...
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crwiley:10.1111/j.1502-3885.2000.tb01211.x 2024-06-02T08:06:32+00:00 10Be dating of Younger Dryas Salpausselkä I formation in Finland TSCHUDI, SILVIO IVY‐OCHS, SUSAN SCHLÜCHTER, CHRISTIAN KUBIK, PETER RAINIO, HEIKKI 2000 http://dx.doi.org/10.1111/j.1502-3885.2000.tb01211.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2000.tb01211.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2000.tb01211.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 29, issue 4, page 287-293 ISSN 0300-9483 1502-3885 journal-article 2000 crwiley https://doi.org/10.1111/j.1502-3885.2000.tb01211.x 2024-05-03T11:11:56Z Boulders of the Younger Dryas Salpausselkä I (Ss I) formation west of Lahti, southern Finland, were sampled for surface exposure dating. The 10 Be concentrations, determined by accelerator mass spectrometry, yield minimum exposure ages of 11 930 ± 950, 11 220 ± 890, 11 050 ± 910 and 11 540 ± 990 years, using recently published production rates scaled for latitude and elevation. This includes a correction to the production rate resulting from postglacial uplift of the Fennoscandian lithosphere (i.e. changing elevation) during the time of exposure. The error‐weighted mean exposure age of 11 420 ± 470 years of the analysed boulders agrees with previous varve dates of Ss I, which range from 11 680 to 11 430 calendar years BP. However, erosion has to be taken into account as a process affecting rock surfaces and therefore influencing exposure ages. Available information suggests an erosion rate of 5 mm/kyr, which increases the error‐weighted mean exposure age to a value of 11 610 ± 470 years. Within the errors, the formation of Ss I in the Vesala area west of Lahti falls into the Younger Dryas time bracket, as defined by the GRIP and GISP 2 ice core (Greenland). Article in Journal/Newspaper Fennoscandian GISP Greenland GRIP ice core Wiley Online Library Greenland Lahti ENVELOPE(23.217,23.217,67.150,67.150) Boreas 29 4 287 293 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Boulders of the Younger Dryas Salpausselkä I (Ss I) formation west of Lahti, southern Finland, were sampled for surface exposure dating. The 10 Be concentrations, determined by accelerator mass spectrometry, yield minimum exposure ages of 11 930 ± 950, 11 220 ± 890, 11 050 ± 910 and 11 540 ± 990 years, using recently published production rates scaled for latitude and elevation. This includes a correction to the production rate resulting from postglacial uplift of the Fennoscandian lithosphere (i.e. changing elevation) during the time of exposure. The error‐weighted mean exposure age of 11 420 ± 470 years of the analysed boulders agrees with previous varve dates of Ss I, which range from 11 680 to 11 430 calendar years BP. However, erosion has to be taken into account as a process affecting rock surfaces and therefore influencing exposure ages. Available information suggests an erosion rate of 5 mm/kyr, which increases the error‐weighted mean exposure age to a value of 11 610 ± 470 years. Within the errors, the formation of Ss I in the Vesala area west of Lahti falls into the Younger Dryas time bracket, as defined by the GRIP and GISP 2 ice core (Greenland). |
format |
Article in Journal/Newspaper |
author |
TSCHUDI, SILVIO IVY‐OCHS, SUSAN SCHLÜCHTER, CHRISTIAN KUBIK, PETER RAINIO, HEIKKI |
spellingShingle |
TSCHUDI, SILVIO IVY‐OCHS, SUSAN SCHLÜCHTER, CHRISTIAN KUBIK, PETER RAINIO, HEIKKI 10Be dating of Younger Dryas Salpausselkä I formation in Finland |
author_facet |
TSCHUDI, SILVIO IVY‐OCHS, SUSAN SCHLÜCHTER, CHRISTIAN KUBIK, PETER RAINIO, HEIKKI |
author_sort |
TSCHUDI, SILVIO |
title |
10Be dating of Younger Dryas Salpausselkä I formation in Finland |
title_short |
10Be dating of Younger Dryas Salpausselkä I formation in Finland |
title_full |
10Be dating of Younger Dryas Salpausselkä I formation in Finland |
title_fullStr |
10Be dating of Younger Dryas Salpausselkä I formation in Finland |
title_full_unstemmed |
10Be dating of Younger Dryas Salpausselkä I formation in Finland |
title_sort |
10be dating of younger dryas salpausselkä i formation in finland |
publisher |
Wiley |
publishDate |
2000 |
url |
http://dx.doi.org/10.1111/j.1502-3885.2000.tb01211.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2000.tb01211.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2000.tb01211.x |
long_lat |
ENVELOPE(23.217,23.217,67.150,67.150) |
geographic |
Greenland Lahti |
geographic_facet |
Greenland Lahti |
genre |
Fennoscandian GISP Greenland GRIP ice core |
genre_facet |
Fennoscandian GISP Greenland GRIP ice core |
op_source |
Boreas volume 29, issue 4, page 287-293 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.2000.tb01211.x |
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Boreas |
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29 |
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4 |
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287 |
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293 |
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1800751487644598272 |