Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM)
Abstract. There is a temporal correlation between the peak activity of the North Atlantic Igneous Province (NAIP) and the Paleocene–Eocene Thermal Maximum (PETM), suggesting that the NAIP may have initiated and/or prolonged this extreme warming event. However, corroborating a causal relationship is...
Published in: | Climate of the Past |
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Language: | English |
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Copernicus Publications under license by EGU – European Geosciences Union GmbH
2023
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Online Access: | http://hdl.handle.net/10852/105019 https://doi.org/10.5194/cp-19-1623-2023 |
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ftoslouniv:oai:www.duo.uio.no:10852/105019 2023-10-09T21:53:53+02:00 Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM) ENEngelskEnglishTracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM) Jones, Morgan Thomas Stokke, Ella Wulfsberg Svensen, Henrik Hovland Planke, Sverre Vickers, Madeleine Larissa 2023-01-26T15:42:35Z http://hdl.handle.net/10852/105019 https://doi.org/10.5194/cp-19-1623-2023 EN eng Copernicus Publications under license by EGU – European Geosciences Union GmbH Jones, Morgan Thomas Stokke, Ella Wulfsberg Svensen, Henrik Hovland Planke, Sverre Vickers, Madeleine Larissa . Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM). Climate of the Past. 2023 http://hdl.handle.net/10852/105019 2115929 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Climate of the Past&rft.volume=&rft.spage=&rft.date=2023 Climate of the Past 19 1623 1652 https://doi.org/10.5194/cp-19-1623-2023 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 1814-9324 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2023 ftoslouniv https://doi.org/10.5194/cp-19-1623-2023 2023-09-20T22:39:16Z Abstract. There is a temporal correlation between the peak activity of the North Atlantic Igneous Province (NAIP) and the Paleocene–Eocene Thermal Maximum (PETM), suggesting that the NAIP may have initiated and/or prolonged this extreme warming event. However, corroborating a causal relationship is hampered by a scarcity of expanded sedimentary records that contain both climatic and volcanic proxies. One locality hosting such a record is Fur Island in Denmark, where an expanded pre- to post-PETM succession containing hundreds of NAIP ash layers is exceptionally well preserved. We compiled a range of environmental proxies, including mercury (Hg) anomalies, paleotemperature proxies, and lithium (Li) and osmium (Os) isotopes, to trace NAIP activity, hydrological changes, weathering, and seawater connectivity across this interval. Volcanic proxies suggest that NAIP activity was elevated before the PETM and appears to have peaked during the body of the δ13C excursion, but decreased considerably during the PETM recovery. This suggests that the acme in NAIP activity, dominated by flood basalt volcanism and thermogenic degassing from contact metamorphism, was likely confined to just ~200 kyr (ca. 56.0–55.8 Ma). The hundreds of thick basaltic ashes in the post-PETM strata likely represent a change from effusive to explosive activity, rather than an increase in NAIP activity. Detrital δ7Li values and clay abundances suggest that volcanic ash production increased basaltic reactive surface area, likely enhancing silicate weathering and atmospheric carbon sequestration in the early Eocene. Signals in lipid biomarkers and Os isotopes, traditionally used to trace paleotemperature and weathering changes, are used here to track seaway connectivity. These proxies indicate that the North Sea was rapidly cut off from the North Atlantic in under 12 kyr during the PETM recovery due to NAIP thermal uplift. Our findings reinforce the hypothesis that the emplacement of the NAIP had a profound and complex impact on Paleocene–Eocene ... Article in Journal/Newspaper North Atlantic Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Climate of the Past 19 8 1623 1652 |
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Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Abstract. There is a temporal correlation between the peak activity of the North Atlantic Igneous Province (NAIP) and the Paleocene–Eocene Thermal Maximum (PETM), suggesting that the NAIP may have initiated and/or prolonged this extreme warming event. However, corroborating a causal relationship is hampered by a scarcity of expanded sedimentary records that contain both climatic and volcanic proxies. One locality hosting such a record is Fur Island in Denmark, where an expanded pre- to post-PETM succession containing hundreds of NAIP ash layers is exceptionally well preserved. We compiled a range of environmental proxies, including mercury (Hg) anomalies, paleotemperature proxies, and lithium (Li) and osmium (Os) isotopes, to trace NAIP activity, hydrological changes, weathering, and seawater connectivity across this interval. Volcanic proxies suggest that NAIP activity was elevated before the PETM and appears to have peaked during the body of the δ13C excursion, but decreased considerably during the PETM recovery. This suggests that the acme in NAIP activity, dominated by flood basalt volcanism and thermogenic degassing from contact metamorphism, was likely confined to just ~200 kyr (ca. 56.0–55.8 Ma). The hundreds of thick basaltic ashes in the post-PETM strata likely represent a change from effusive to explosive activity, rather than an increase in NAIP activity. Detrital δ7Li values and clay abundances suggest that volcanic ash production increased basaltic reactive surface area, likely enhancing silicate weathering and atmospheric carbon sequestration in the early Eocene. Signals in lipid biomarkers and Os isotopes, traditionally used to trace paleotemperature and weathering changes, are used here to track seaway connectivity. These proxies indicate that the North Sea was rapidly cut off from the North Atlantic in under 12 kyr during the PETM recovery due to NAIP thermal uplift. Our findings reinforce the hypothesis that the emplacement of the NAIP had a profound and complex impact on Paleocene–Eocene ... |
format |
Article in Journal/Newspaper |
author |
Jones, Morgan Thomas Stokke, Ella Wulfsberg Svensen, Henrik Hovland Planke, Sverre Vickers, Madeleine Larissa |
spellingShingle |
Jones, Morgan Thomas Stokke, Ella Wulfsberg Svensen, Henrik Hovland Planke, Sverre Vickers, Madeleine Larissa Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM) |
author_facet |
Jones, Morgan Thomas Stokke, Ella Wulfsberg Svensen, Henrik Hovland Planke, Sverre Vickers, Madeleine Larissa |
author_sort |
Jones, Morgan Thomas |
title |
Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM) |
title_short |
Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM) |
title_full |
Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM) |
title_fullStr |
Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM) |
title_full_unstemmed |
Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM) |
title_sort |
tracing north atlantic volcanism and seaway connectivity across the paleocene–eocene thermal maximum (petm) |
publisher |
Copernicus Publications under license by EGU – European Geosciences Union GmbH |
publishDate |
2023 |
url |
http://hdl.handle.net/10852/105019 https://doi.org/10.5194/cp-19-1623-2023 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
1814-9324 |
op_relation |
Jones, Morgan Thomas Stokke, Ella Wulfsberg Svensen, Henrik Hovland Planke, Sverre Vickers, Madeleine Larissa . Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM). Climate of the Past. 2023 http://hdl.handle.net/10852/105019 2115929 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Climate of the Past&rft.volume=&rft.spage=&rft.date=2023 Climate of the Past 19 1623 1652 https://doi.org/10.5194/cp-19-1623-2023 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5194/cp-19-1623-2023 |
container_title |
Climate of the Past |
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19 |
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8 |
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1623 |
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1652 |
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1779317238098034688 |