Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic
Abstract Changes in ocean ventilation have been pivotal in regulating carbon sequestration and release on centennial to millennial timescales. However, paleoceanographic reconstructions documenting changes in deep-ocean ventilation using 14C dating, may bear multidimensional explanations, obfuscatin...
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ftdoajarticles:oai:doaj.org/article:b956086da4274fabaa0604a0fd873694 2023-07-23T04:20:27+02:00 Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic Jingyu Liu Yipeng Wang Samuel L. Jaccard Nan Wang Xun Gong Nianqiao Fang Rui Bao 2023-06-01T00:00:00Z https://doi.org/10.1038/s41467-023-39490-6 https://doaj.org/article/b956086da4274fabaa0604a0fd873694 EN eng Nature Portfolio https://doi.org/10.1038/s41467-023-39490-6 https://doaj.org/toc/2041-1723 doi:10.1038/s41467-023-39490-6 2041-1723 https://doaj.org/article/b956086da4274fabaa0604a0fd873694 Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023) Science Q article 2023 ftdoajarticles https://doi.org/10.1038/s41467-023-39490-6 2023-07-02T00:40:58Z Abstract Changes in ocean ventilation have been pivotal in regulating carbon sequestration and release on centennial to millennial timescales. However, paleoceanographic reconstructions documenting changes in deep-ocean ventilation using 14C dating, may bear multidimensional explanations, obfuscating the roles of ocean ventilation played on climate evolution. Here, we show that previously inferred poorly ventilated conditions in the North Atlantic were linked to enhanced pre-aged organic carbon (OC) input during Heinrich Stadial 1 (HS1). The 14C age of sedimentary OC was approximately 13,345 ± 692 years older than the coeval foraminifera in the central North Atlantic during HS1, which is coupled to a ventilation age of 5,169 ± 660 years. Old OC was mainly of terrigenous origin and exported to the North Atlantic by ice-rafting. Remineralization of old terrigenous OC in the ocean may have contributed to, at least in part, the anomalously old ventilation ages reported for the high-latitude North Atlantic during HS1. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Nature Communications 14 1 |
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Science Q Jingyu Liu Yipeng Wang Samuel L. Jaccard Nan Wang Xun Gong Nianqiao Fang Rui Bao Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic |
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Science Q |
description |
Abstract Changes in ocean ventilation have been pivotal in regulating carbon sequestration and release on centennial to millennial timescales. However, paleoceanographic reconstructions documenting changes in deep-ocean ventilation using 14C dating, may bear multidimensional explanations, obfuscating the roles of ocean ventilation played on climate evolution. Here, we show that previously inferred poorly ventilated conditions in the North Atlantic were linked to enhanced pre-aged organic carbon (OC) input during Heinrich Stadial 1 (HS1). The 14C age of sedimentary OC was approximately 13,345 ± 692 years older than the coeval foraminifera in the central North Atlantic during HS1, which is coupled to a ventilation age of 5,169 ± 660 years. Old OC was mainly of terrigenous origin and exported to the North Atlantic by ice-rafting. Remineralization of old terrigenous OC in the ocean may have contributed to, at least in part, the anomalously old ventilation ages reported for the high-latitude North Atlantic during HS1. |
format |
Article in Journal/Newspaper |
author |
Jingyu Liu Yipeng Wang Samuel L. Jaccard Nan Wang Xun Gong Nianqiao Fang Rui Bao |
author_facet |
Jingyu Liu Yipeng Wang Samuel L. Jaccard Nan Wang Xun Gong Nianqiao Fang Rui Bao |
author_sort |
Jingyu Liu |
title |
Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic |
title_short |
Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic |
title_full |
Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic |
title_fullStr |
Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic |
title_full_unstemmed |
Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic |
title_sort |
pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the north atlantic |
publisher |
Nature Portfolio |
publishDate |
2023 |
url |
https://doi.org/10.1038/s41467-023-39490-6 https://doaj.org/article/b956086da4274fabaa0604a0fd873694 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023) |
op_relation |
https://doi.org/10.1038/s41467-023-39490-6 https://doaj.org/toc/2041-1723 doi:10.1038/s41467-023-39490-6 2041-1723 https://doaj.org/article/b956086da4274fabaa0604a0fd873694 |
op_doi |
https://doi.org/10.1038/s41467-023-39490-6 |
container_title |
Nature Communications |
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14 |
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1 |
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1772184771854598144 |