Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse?
Abstract. The International Ocean Discovery Program (IODP) Expedition 396 to the mid-Norwegian margin recovered > 1300 m of pristinely preserved, volcanic-ash-rich sediments deposited during the late Paleocene and early Eocene from close to the centre of the North Atlantic Igneous Province (NAIP)...
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Copernicus Publications under license by EGU – European Geosciences Union GmbH
2024
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Online Access: | http://hdl.handle.net/10852/110164 https://doi.org/10.5194/cp-20-1-2024 |
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ftoslouniv:oai:www.duo.uio.no:10852/110164 2024-09-15T18:20:30+00:00 Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse? ENEngelskEnglishPaleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse? Vickers, Madeleine Larissa Jones, Morgan Thomas Longman, Jack Evans, David Ullmann, Clemens V. Stokke, Ella Wulfsberg Vickers, Martin Frieling, Joost Harper, Dustin T. Clementi, Vincent J. 2024-02-21T08:09:01Z http://hdl.handle.net/10852/110164 https://doi.org/10.5194/cp-20-1-2024 EN eng Copernicus Publications under license by EGU – European Geosciences Union GmbH Vickers, Madeleine Larissa Jones, Morgan Thomas Longman, Jack Evans, David Ullmann, Clemens V. Stokke, Ella Wulfsberg Vickers, Martin Frieling, Joost Harper, Dustin T. Clementi, Vincent J. . Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse?. Climate of the Past. 2024, 20(1), 1-23 http://hdl.handle.net/10852/110164 2248278 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=20&rft.spage=1&rft.date=2024 Climate of the Past 20 1 23 https://doi.org/10.5194/cp-20-1-2024 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 1814-9324 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2024 ftoslouniv https://doi.org/10.5194/cp-20-1-2024 2024-08-05T14:09:29Z Abstract. The International Ocean Discovery Program (IODP) Expedition 396 to the mid-Norwegian margin recovered > 1300 m of pristinely preserved, volcanic-ash-rich sediments deposited during the late Paleocene and early Eocene from close to the centre of the North Atlantic Igneous Province (NAIP). Remarkably, many of these cores contain glendonites, pseudomorphs after the purported cold-water mineral ikaite, from sediments dated to the late Paleocene and early Eocene. These time intervals span some of the hottest climates of the Cenozoic, including the Paleocene–Eocene Thermal Maximum (PETM). Global deep-ocean temperatures are not thought to have dropped below 10 ∘C at any point during this time, making the occurrence of supposedly cold-water (near-freezing temperature) glendonite pseudomorphs seemingly paradoxical. This study presents a detailed sedimentological, geochemical, and microscopic study of the IODP Exp. 396 glendonites and presents an updated model for the ikaite-to-calcite transformation for these glendonites. Specifically, we show that early diagenesis of basaltic ashes of the NAIP appear to have chemically promoted ikaite growth in the sediments in this region. Together with existing knowledge of late Paleocene and early Eocene glendonites from Svalbard to the north and early Eocene glendonites from Denmark to the south, these new glendonite finds possibly imply episodic, short-duration, and likely localized cooling in the Nordic Seas region, which may have been directly or indirectly linked to the emplacement of the NAIP. Article in Journal/Newspaper Nordic Seas North Atlantic Svalbard Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Climate of the Past 20 1 1 23 |
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Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
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ftoslouniv |
language |
English |
description |
Abstract. The International Ocean Discovery Program (IODP) Expedition 396 to the mid-Norwegian margin recovered > 1300 m of pristinely preserved, volcanic-ash-rich sediments deposited during the late Paleocene and early Eocene from close to the centre of the North Atlantic Igneous Province (NAIP). Remarkably, many of these cores contain glendonites, pseudomorphs after the purported cold-water mineral ikaite, from sediments dated to the late Paleocene and early Eocene. These time intervals span some of the hottest climates of the Cenozoic, including the Paleocene–Eocene Thermal Maximum (PETM). Global deep-ocean temperatures are not thought to have dropped below 10 ∘C at any point during this time, making the occurrence of supposedly cold-water (near-freezing temperature) glendonite pseudomorphs seemingly paradoxical. This study presents a detailed sedimentological, geochemical, and microscopic study of the IODP Exp. 396 glendonites and presents an updated model for the ikaite-to-calcite transformation for these glendonites. Specifically, we show that early diagenesis of basaltic ashes of the NAIP appear to have chemically promoted ikaite growth in the sediments in this region. Together with existing knowledge of late Paleocene and early Eocene glendonites from Svalbard to the north and early Eocene glendonites from Denmark to the south, these new glendonite finds possibly imply episodic, short-duration, and likely localized cooling in the Nordic Seas region, which may have been directly or indirectly linked to the emplacement of the NAIP. |
format |
Article in Journal/Newspaper |
author |
Vickers, Madeleine Larissa Jones, Morgan Thomas Longman, Jack Evans, David Ullmann, Clemens V. Stokke, Ella Wulfsberg Vickers, Martin Frieling, Joost Harper, Dustin T. Clementi, Vincent J. |
spellingShingle |
Vickers, Madeleine Larissa Jones, Morgan Thomas Longman, Jack Evans, David Ullmann, Clemens V. Stokke, Ella Wulfsberg Vickers, Martin Frieling, Joost Harper, Dustin T. Clementi, Vincent J. Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse? |
author_facet |
Vickers, Madeleine Larissa Jones, Morgan Thomas Longman, Jack Evans, David Ullmann, Clemens V. Stokke, Ella Wulfsberg Vickers, Martin Frieling, Joost Harper, Dustin T. Clementi, Vincent J. |
author_sort |
Vickers, Madeleine Larissa |
title |
Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse? |
title_short |
Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse? |
title_full |
Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse? |
title_fullStr |
Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse? |
title_full_unstemmed |
Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse? |
title_sort |
paleocene-eocene age glendonites from the mid-norwegian margin - indicators of cold snaps in the hothouse? |
publisher |
Copernicus Publications under license by EGU – European Geosciences Union GmbH |
publishDate |
2024 |
url |
http://hdl.handle.net/10852/110164 https://doi.org/10.5194/cp-20-1-2024 |
genre |
Nordic Seas North Atlantic Svalbard |
genre_facet |
Nordic Seas North Atlantic Svalbard |
op_source |
1814-9324 |
op_relation |
Vickers, Madeleine Larissa Jones, Morgan Thomas Longman, Jack Evans, David Ullmann, Clemens V. Stokke, Ella Wulfsberg Vickers, Martin Frieling, Joost Harper, Dustin T. Clementi, Vincent J. . Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse?. Climate of the Past. 2024, 20(1), 1-23 http://hdl.handle.net/10852/110164 2248278 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=20&rft.spage=1&rft.date=2024 Climate of the Past 20 1 23 https://doi.org/10.5194/cp-20-1-2024 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5194/cp-20-1-2024 |
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