Late Weichselian Marine 14 C Reservoir Ages at the Western Coast of Norway
A shallow marine Late Weichselian deposit on the outer coast of western Norway contains both terrestrial plant material and articulated marine shells. We have 14 C dated both types of material from eight different stratigraphic levels covering the time interval 12,300 to 11,100 14 C yr B.P. The diff...
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Cambridge University Press (CUP)
1999
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crcambridgeupr:10.1006/qres.1999.2048 2024-09-15T18:22:56+00:00 Late Weichselian Marine 14 C Reservoir Ages at the Western Coast of Norway Bondevik, Stein Birks, Hilary H. Gulliksen, Steinar Mangerud, Jan 1999 http://dx.doi.org/10.1006/qres.1999.2048 http://api.elsevier.com/content/article/PII:S0033589499920483?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589499920483?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400025679 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 52, issue 1, page 104-114 ISSN 0033-5894 1096-0287 journal-article 1999 crcambridgeupr https://doi.org/10.1006/qres.1999.2048 2024-07-31T04:01:29Z A shallow marine Late Weichselian deposit on the outer coast of western Norway contains both terrestrial plant material and articulated marine shells. We have 14 C dated both types of material from eight different stratigraphic levels covering the time interval 12,300 to 11,100 14 C yr B.P. The difference between 14 C-dated terrestrial plant material and marine shell material (the marine reservoir age) ranges from 200 to 525 yr, with a weighted average of 380 ± 32 yr. This is almost identical to the present reservoir age of 379 ± 20 yr for southern Norway. In the mid-Younger Dryas (YD) interval the reservoir age in the North Atlantic (55°N–65°N) was 700–800 yr, considerably greater than the present reservoir age and the age we have measured for the Bølling–Allerød interval. The reason for this increase during the YD is probably a combination of reduced inflow of surface waters to the North Atlantic and more extensive sea-ice cover. Evidence from marine cores show that the southeastern Norwegian Sea experienced rapid fluctuations in the inflow of warm Atlantic surface water during the period 12,300 to 11,000 yr B.P. However, the reservoir age apparently did not increase during these colder periods (Older Dryas I and II). The reason is probably that, in contrast to the YD, these colder periods did not last long enough and/or were of too limited extent to alter the reservoir age of the ocean. A comparison of the obtained 14 C dates with the varve 14 C chronology from Lake Suigetsu indicates an age of 12,770 cal yr B.P. for the AL/YD boundary. Article in Journal/Newspaper North Atlantic Norwegian Sea Sea ice Cambridge University Press Quaternary Research 52 1 104 114 |
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A shallow marine Late Weichselian deposit on the outer coast of western Norway contains both terrestrial plant material and articulated marine shells. We have 14 C dated both types of material from eight different stratigraphic levels covering the time interval 12,300 to 11,100 14 C yr B.P. The difference between 14 C-dated terrestrial plant material and marine shell material (the marine reservoir age) ranges from 200 to 525 yr, with a weighted average of 380 ± 32 yr. This is almost identical to the present reservoir age of 379 ± 20 yr for southern Norway. In the mid-Younger Dryas (YD) interval the reservoir age in the North Atlantic (55°N–65°N) was 700–800 yr, considerably greater than the present reservoir age and the age we have measured for the Bølling–Allerød interval. The reason for this increase during the YD is probably a combination of reduced inflow of surface waters to the North Atlantic and more extensive sea-ice cover. Evidence from marine cores show that the southeastern Norwegian Sea experienced rapid fluctuations in the inflow of warm Atlantic surface water during the period 12,300 to 11,000 yr B.P. However, the reservoir age apparently did not increase during these colder periods (Older Dryas I and II). The reason is probably that, in contrast to the YD, these colder periods did not last long enough and/or were of too limited extent to alter the reservoir age of the ocean. A comparison of the obtained 14 C dates with the varve 14 C chronology from Lake Suigetsu indicates an age of 12,770 cal yr B.P. for the AL/YD boundary. |
format |
Article in Journal/Newspaper |
author |
Bondevik, Stein Birks, Hilary H. Gulliksen, Steinar Mangerud, Jan |
spellingShingle |
Bondevik, Stein Birks, Hilary H. Gulliksen, Steinar Mangerud, Jan Late Weichselian Marine 14 C Reservoir Ages at the Western Coast of Norway |
author_facet |
Bondevik, Stein Birks, Hilary H. Gulliksen, Steinar Mangerud, Jan |
author_sort |
Bondevik, Stein |
title |
Late Weichselian Marine 14 C Reservoir Ages at the Western Coast of Norway |
title_short |
Late Weichselian Marine 14 C Reservoir Ages at the Western Coast of Norway |
title_full |
Late Weichselian Marine 14 C Reservoir Ages at the Western Coast of Norway |
title_fullStr |
Late Weichselian Marine 14 C Reservoir Ages at the Western Coast of Norway |
title_full_unstemmed |
Late Weichselian Marine 14 C Reservoir Ages at the Western Coast of Norway |
title_sort |
late weichselian marine 14 c reservoir ages at the western coast of norway |
publisher |
Cambridge University Press (CUP) |
publishDate |
1999 |
url |
http://dx.doi.org/10.1006/qres.1999.2048 http://api.elsevier.com/content/article/PII:S0033589499920483?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589499920483?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400025679 |
genre |
North Atlantic Norwegian Sea Sea ice |
genre_facet |
North Atlantic Norwegian Sea Sea ice |
op_source |
Quaternary Research volume 52, issue 1, page 104-114 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1006/qres.1999.2048 |
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Quaternary Research |
container_volume |
52 |
container_issue |
1 |
container_start_page |
104 |
op_container_end_page |
114 |
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1810462976252051456 |