Estimated reservoir ages of the Black Sea since the last Glacia
Accelerator mass spectrometry (AMS) radiocarbon dating of ostracod and gastropod shells from the southwestern Black Sea cores combined with tephrochronology provides the basis for studying reservoir age changes in the late-glacial Black Sea. The comparison of our data with records from the northwest...
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Department of Geosciences, University of Arizona
2008
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Online Access: | https://oceanrep.geomar.de/id/eprint/7267/ https://oceanrep.geomar.de/id/eprint/7267/3/Kwiecen.pdf https://doi.org/10.1017/S0033822200043393 |
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ftoceanrep:oai:oceanrep.geomar.de:7267 2023-05-15T16:39:17+02:00 Estimated reservoir ages of the Black Sea since the last Glacia Kwiecien, O. Arz, H. W. Lamy, F. Wulf, S. Bahr, André Röhl, U. Haug, G. H. 2008 text https://oceanrep.geomar.de/id/eprint/7267/ https://oceanrep.geomar.de/id/eprint/7267/3/Kwiecen.pdf https://doi.org/10.1017/S0033822200043393 en eng Department of Geosciences, University of Arizona https://oceanrep.geomar.de/id/eprint/7267/3/Kwiecen.pdf Kwiecien, O., Arz, H. W., Lamy, F., Wulf, S., Bahr, A., Röhl, U. and Haug, G. H. (2008) Estimated reservoir ages of the Black Sea since the last Glacia. Open Access Radiocarbon, 50 (1). pp. 99-118. DOI 10.1017/S0033822200043393 <https://doi.org/10.1017/S0033822200043393>. doi:10.1017/S0033822200043393 info:eu-repo/semantics/openAccess Article PeerReviewed 2008 ftoceanrep https://doi.org/10.1017/S0033822200043393 2023-04-07T14:54:32Z Accelerator mass spectrometry (AMS) radiocarbon dating of ostracod and gastropod shells from the southwestern Black Sea cores combined with tephrochronology provides the basis for studying reservoir age changes in the late-glacial Black Sea. The comparison of our data with records from the northwestern Black Sea shows that an apparent reservoir age of ∼1450 14C yr found in the glacial is characteristic of a homogenized water column. This apparent reservoir age is most likely due to the hardwater effect. Though data indicate that a reservoir age of ∼1450 14C yr may have persisted until the Bølling-Allerød warm period, a comparison with the GISP2 ice-core record suggests a gradual reduction of the reservoir age to ∼1000 14C yr, which might have been caused by dilution effects of inflowing meltwater. During the Bølling-Allerød warm period, soil development and increased vegetation cover in the catchment area of the Black Sea could have hampered erosion of carbonate bedrock, and hence diminished contamination by “old” carbon brought to the Black Sea basin by rivers. A further reduction of the reservoir age most probably occurred contemporary to the precipitation of inorganic carbonates triggered by increased phytoplankton activity, and was confined to the upper water column. Intensified deep water formation subsequently enhanced the mixing/convection and renewal of intermediate water. During the Younger Dryas, the age of the upper water column was close to 0 yr, while the intermediate water was ∼900 14C yr older. The first inflow of saline Mediterranean water, at ∼8300 14C yr BP, shifted the surface water age towards the recent value of ∼400 14C yr. Article in Journal/Newspaper ice core OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Radiocarbon 50 1 99 118 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Accelerator mass spectrometry (AMS) radiocarbon dating of ostracod and gastropod shells from the southwestern Black Sea cores combined with tephrochronology provides the basis for studying reservoir age changes in the late-glacial Black Sea. The comparison of our data with records from the northwestern Black Sea shows that an apparent reservoir age of ∼1450 14C yr found in the glacial is characteristic of a homogenized water column. This apparent reservoir age is most likely due to the hardwater effect. Though data indicate that a reservoir age of ∼1450 14C yr may have persisted until the Bølling-Allerød warm period, a comparison with the GISP2 ice-core record suggests a gradual reduction of the reservoir age to ∼1000 14C yr, which might have been caused by dilution effects of inflowing meltwater. During the Bølling-Allerød warm period, soil development and increased vegetation cover in the catchment area of the Black Sea could have hampered erosion of carbonate bedrock, and hence diminished contamination by “old” carbon brought to the Black Sea basin by rivers. A further reduction of the reservoir age most probably occurred contemporary to the precipitation of inorganic carbonates triggered by increased phytoplankton activity, and was confined to the upper water column. Intensified deep water formation subsequently enhanced the mixing/convection and renewal of intermediate water. During the Younger Dryas, the age of the upper water column was close to 0 yr, while the intermediate water was ∼900 14C yr older. The first inflow of saline Mediterranean water, at ∼8300 14C yr BP, shifted the surface water age towards the recent value of ∼400 14C yr. |
format |
Article in Journal/Newspaper |
author |
Kwiecien, O. Arz, H. W. Lamy, F. Wulf, S. Bahr, André Röhl, U. Haug, G. H. |
spellingShingle |
Kwiecien, O. Arz, H. W. Lamy, F. Wulf, S. Bahr, André Röhl, U. Haug, G. H. Estimated reservoir ages of the Black Sea since the last Glacia |
author_facet |
Kwiecien, O. Arz, H. W. Lamy, F. Wulf, S. Bahr, André Röhl, U. Haug, G. H. |
author_sort |
Kwiecien, O. |
title |
Estimated reservoir ages of the Black Sea since the last Glacia |
title_short |
Estimated reservoir ages of the Black Sea since the last Glacia |
title_full |
Estimated reservoir ages of the Black Sea since the last Glacia |
title_fullStr |
Estimated reservoir ages of the Black Sea since the last Glacia |
title_full_unstemmed |
Estimated reservoir ages of the Black Sea since the last Glacia |
title_sort |
estimated reservoir ages of the black sea since the last glacia |
publisher |
Department of Geosciences, University of Arizona |
publishDate |
2008 |
url |
https://oceanrep.geomar.de/id/eprint/7267/ https://oceanrep.geomar.de/id/eprint/7267/3/Kwiecen.pdf https://doi.org/10.1017/S0033822200043393 |
genre |
ice core |
genre_facet |
ice core |
op_relation |
https://oceanrep.geomar.de/id/eprint/7267/3/Kwiecen.pdf Kwiecien, O., Arz, H. W., Lamy, F., Wulf, S., Bahr, A., Röhl, U. and Haug, G. H. (2008) Estimated reservoir ages of the Black Sea since the last Glacia. Open Access Radiocarbon, 50 (1). pp. 99-118. DOI 10.1017/S0033822200043393 <https://doi.org/10.1017/S0033822200043393>. doi:10.1017/S0033822200043393 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/S0033822200043393 |
container_title |
Radiocarbon |
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50 |
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1 |
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99 |
op_container_end_page |
118 |
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1766029621735718912 |