Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14C chronologies
The calibration of marine 14C dates requires the incorporation of regionally specific marine reservoir offsets known as ΔR, essential for accurate and meaningful inter-archive comparisons. Revised, regional ΔR (‘ΔRR’) values for the Barents Sea are presented for molluscs and cetaceans for the two la...
Published in: | Quaternary Geochronology |
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Online Access: | https://hdl.handle.net/10037/26476 https://doi.org/10.1016/j.quageo.2021.101244 |
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ftunivtroemsoe:oai:munin.uit.no:10037/26476 2023-05-15T15:38:50+02:00 Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14C chronologies Pienkowski, Anna Husum, Katrine Furze, Mark Missana, Amandine F.J. Irvali, Nil Divine, Dmitry V. Eilertsen, Vårin Trælvik 2022-02-11 https://hdl.handle.net/10037/26476 https://doi.org/10.1016/j.quageo.2021.101244 eng eng Elsevier Quaternary Geochronology Norges forskningsråd: 276730 https://www.sciencedirect.com/science/article/pii/S1871101421000947?via%3Dihub Pienkowski, Husum, Furze, Missana, Irvali, Divine, Eilertsen. Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14 C chronologies. Quaternary Geochronology. 2022;68 FRIDAID 1955838 doi:10.1016/j.quageo.2021.101244 1871-1014 1878-0350 https://hdl.handle.net/10037/26476 openAccess Copyright 2022 The Author(s) Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2022 ftunivtroemsoe https://doi.org/10.1016/j.quageo.2021.101244 2022-08-31T23:00:12Z The calibration of marine 14C dates requires the incorporation of regionally specific marine reservoir offsets known as ΔR, essential for accurate and meaningful inter-archive comparisons. Revised, regional ΔR (‘ΔRR’) values for the Barents Sea are presented for molluscs and cetaceans for the two latest iterations of the marine calibration curve, based on previously published pre-bomb live-collected and radiocarbon-dated samples (‘ΔRL’; molluscs: n = 16; cetaceans: n = 18). Molluscan ΔRR, determined for four broad regional oceanographic settings, are: western Svalbard (including Bjørnøya), −61 ± 37 14C yrs (Marine20), 94 ± 38 14C yrs (Marine13); Franz Josef Land, −277 ± 57 14C yrs (Marine20), −122 ± 38 14C yrs (Marine13); Novaya Zemlya, −156 ± 73 14C yrs (Marine20), 0 ± 76 14C yrs (Marine13); northern Norway, −86 ± 39 14C yrs (Marine20), 74 ± 24 14C yrs (Marine13). Molluscan ΔRR values are considered applicable to other marine carbonate materials (e.g., foraminifera, ostracods). Cetacean ΔRR are determined for toothed (n = 10) and baleen (n = 8) whales, and a combined toothed-baleen group (n = 18): toothed, −161 ± 41 14C yrs (Marine20), 1 ± 41 14C yrs (Marine13); baleen, −158 ± 43 14C yrs (Marine20), 8 ± 41 14C yrs (Marine13); combined baleen-toothed whales, −160 ± 41 14C yrs (Marine20), 4 ± 49 14C yrs (Marine13). Where identification and separation of baleen and toothed whales is impossible the combined ΔRR term may be used. However, we explicitly discourage the application of existing cetacean ΔRR terms to other marine mammals. Our new ΔRR values are applicable for as long as those broad oceanographic conditions (circulation and ventilation) have persisted, i.e., through the Holocene. We recommend using the latest iteration of the marine calibration curve, Marine20, which seems to better capture the time-variant nature of R compared to Marine13. More ΔRL datapoints for both molluscs and cetaceans would improve the accuracy and precision of ΔRR. In the meantime, our new ΔR terms facilitate the calibration of ... Article in Journal/Newspaper Barents Sea Bjørnøya Franz Josef Land Northern Norway Novaya Zemlya Svalbard toothed whales University of Tromsø: Munin Open Research Archive Barents Sea Bjørnøya ENVELOPE(-67.250,-67.250,-68.151,-68.151) Franz Josef Land ENVELOPE(55.000,55.000,81.000,81.000) Norway Svalbard Quaternary Geochronology 68 101244 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
The calibration of marine 14C dates requires the incorporation of regionally specific marine reservoir offsets known as ΔR, essential for accurate and meaningful inter-archive comparisons. Revised, regional ΔR (‘ΔRR’) values for the Barents Sea are presented for molluscs and cetaceans for the two latest iterations of the marine calibration curve, based on previously published pre-bomb live-collected and radiocarbon-dated samples (‘ΔRL’; molluscs: n = 16; cetaceans: n = 18). Molluscan ΔRR, determined for four broad regional oceanographic settings, are: western Svalbard (including Bjørnøya), −61 ± 37 14C yrs (Marine20), 94 ± 38 14C yrs (Marine13); Franz Josef Land, −277 ± 57 14C yrs (Marine20), −122 ± 38 14C yrs (Marine13); Novaya Zemlya, −156 ± 73 14C yrs (Marine20), 0 ± 76 14C yrs (Marine13); northern Norway, −86 ± 39 14C yrs (Marine20), 74 ± 24 14C yrs (Marine13). Molluscan ΔRR values are considered applicable to other marine carbonate materials (e.g., foraminifera, ostracods). Cetacean ΔRR are determined for toothed (n = 10) and baleen (n = 8) whales, and a combined toothed-baleen group (n = 18): toothed, −161 ± 41 14C yrs (Marine20), 1 ± 41 14C yrs (Marine13); baleen, −158 ± 43 14C yrs (Marine20), 8 ± 41 14C yrs (Marine13); combined baleen-toothed whales, −160 ± 41 14C yrs (Marine20), 4 ± 49 14C yrs (Marine13). Where identification and separation of baleen and toothed whales is impossible the combined ΔRR term may be used. However, we explicitly discourage the application of existing cetacean ΔRR terms to other marine mammals. Our new ΔRR values are applicable for as long as those broad oceanographic conditions (circulation and ventilation) have persisted, i.e., through the Holocene. We recommend using the latest iteration of the marine calibration curve, Marine20, which seems to better capture the time-variant nature of R compared to Marine13. More ΔRL datapoints for both molluscs and cetaceans would improve the accuracy and precision of ΔRR. In the meantime, our new ΔR terms facilitate the calibration of ... |
format |
Article in Journal/Newspaper |
author |
Pienkowski, Anna Husum, Katrine Furze, Mark Missana, Amandine F.J. Irvali, Nil Divine, Dmitry V. Eilertsen, Vårin Trælvik |
spellingShingle |
Pienkowski, Anna Husum, Katrine Furze, Mark Missana, Amandine F.J. Irvali, Nil Divine, Dmitry V. Eilertsen, Vårin Trælvik Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14C chronologies |
author_facet |
Pienkowski, Anna Husum, Katrine Furze, Mark Missana, Amandine F.J. Irvali, Nil Divine, Dmitry V. Eilertsen, Vårin Trælvik |
author_sort |
Pienkowski, Anna |
title |
Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14C chronologies |
title_short |
Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14C chronologies |
title_full |
Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14C chronologies |
title_fullStr |
Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14C chronologies |
title_full_unstemmed |
Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14C chronologies |
title_sort |
revised δr values for the barents sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14c chronologies |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/26476 https://doi.org/10.1016/j.quageo.2021.101244 |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) ENVELOPE(55.000,55.000,81.000,81.000) |
geographic |
Barents Sea Bjørnøya Franz Josef Land Norway Svalbard |
geographic_facet |
Barents Sea Bjørnøya Franz Josef Land Norway Svalbard |
genre |
Barents Sea Bjørnøya Franz Josef Land Northern Norway Novaya Zemlya Svalbard toothed whales |
genre_facet |
Barents Sea Bjørnøya Franz Josef Land Northern Norway Novaya Zemlya Svalbard toothed whales |
op_relation |
Quaternary Geochronology Norges forskningsråd: 276730 https://www.sciencedirect.com/science/article/pii/S1871101421000947?via%3Dihub Pienkowski, Husum, Furze, Missana, Irvali, Divine, Eilertsen. Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14 C chronologies. Quaternary Geochronology. 2022;68 FRIDAID 1955838 doi:10.1016/j.quageo.2021.101244 1871-1014 1878-0350 https://hdl.handle.net/10037/26476 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.1016/j.quageo.2021.101244 |
container_title |
Quaternary Geochronology |
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68 |
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101244 |
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1766370198743416832 |