The Cenozoic palaeoenvironment of the Arctic Ocean
The history of the Arctic Ocean during the Cenozoic era (0-65 million years ago) is largely unknown from direct evidence. Here we present a Cenozoic palaeoceanographic record constructed from >400 m of sediment core from a recent drilling expedition to the Lomonosov ridge in the Arctic Ocean. Our...
Published in: | Nature |
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Online Access: | http://hdl.handle.net/11577/1564699 https://doi.org/10.1038/nature04800 |
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ftunivpadovairis:oai:www.research.unipd.it:11577/1564699 2024-04-14T08:04:15+00:00 The Cenozoic palaeoenvironment of the Arctic Ocean MORAN K BACKMAN J BRINKHUIS H CLEMENS SC CRONIN T DICKENS GR EYNAUD F GATTACCECA J JAKOBSSON M JORDAN RW KAMINSKI M KING J KOC N KRYLOV A MARTINEZ N MATTHIESSEN J MCINROY D MOORE TC ONODERA J O'REGAN M PALIKE H REA B SAKAMOTO T SMITH DC STEIN R ST JOHN K SUTO I SUZUKI N TAKAHASHI K WATANABE M YAMAMOTO M FARRELL J FRANK M KUBIK P JOKAT W KRISTOFFERSEN Y. RIO, DOMENICO Moran, K Backman, J Brinkhuis, H Clemens, Sc Cronin, T Dickens, Gr Eynaud, F Gattacceca, J Jakobsson, M Jordan, Rw Kaminski, M King, J Koc, N Krylov, A Martinez, N Matthiessen, J Mcinroy, D Moore, Tc Onodera, J O'Regan, M Palike, H Rea, B Rio, Domenico Sakamoto, T Smith, Dc Stein, R ST JOHN, K Suto, I Suzuki, N Takahashi, K Watanabe, M Yamamoto, M Farrell, J Frank, M Kubik, P Jokat, W Kristoffersen, Y. 2006 STAMPA http://hdl.handle.net/11577/1564699 https://doi.org/10.1038/nature04800 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000237920800039 volume:441 firstpage:601 lastpage:605 numberofpages:5 journal:NATURE http://hdl.handle.net/11577/1564699 doi:10.1038/nature04800 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33745256185 Cenozoic Eocene greenhouse ecosystem ice-rafted debris paleoceanography paleoenvironment sea ice sediment core sedimentation rate surface water temperature effect info:eu-repo/semantics/article 2006 ftunivpadovairis https://doi.org/10.1038/nature04800 2024-03-21T18:59:18Z The history of the Arctic Ocean during the Cenozoic era (0-65 million years ago) is largely unknown from direct evidence. Here we present a Cenozoic palaeoceanographic record constructed from >400 m of sediment core from a recent drilling expedition to the Lomonosov ridge in the Arctic Ocean. Our record shows a palaeoenvironmental transition from a warm 'greenhouse' world, during the late Palaeocene and early Eocene epochs, to a colder 'icehouse' world influenced by sea ice and icebergs from the middle Eocene epoch to the present. For the most recent ∼14 Myr, we find sedimentation rates of 1-2 cm per thousand years, in stark contrast to the substantially lower rates proposed in earlier studies; this record of the Neogene reveals cooling of the Arctic that was synchronous with the expansion of Greenland ice (∼3.2 Myr ago) and East Antarctic ice (∼14 Myr ago). We find evidence for the first occurrence of ice-rafted debris in the middle Eocene epoch (∼45 Myr ago), some 35 Myr earlier than previously thought; fresh surface waters were present at ∼49 Myr ago, before the onset of ice-rafted debris. Also, the temperatures of surface waters during the Palaeocene/Eocene thermal maximum (∼55 Myr ago) appear to have been substantially warmer than previously estimated. The revised timing of the earliest Arctic cooling events coincides with those from Antarctica, supporting arguments for bipolar symmetry in climate change. © 2006 Nature Publishing Group. Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic Arctic Ocean Climate change Greenland Iceberg* Iceberg* Lomonosov Ridge Sea ice Padua Research Archive (IRIS - Università degli Studi di Padova) Arctic Antarctic Arctic Ocean Greenland Nature 441 7093 601 605 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
Cenozoic Eocene greenhouse ecosystem ice-rafted debris paleoceanography paleoenvironment sea ice sediment core sedimentation rate surface water temperature effect |
spellingShingle |
Cenozoic Eocene greenhouse ecosystem ice-rafted debris paleoceanography paleoenvironment sea ice sediment core sedimentation rate surface water temperature effect MORAN K BACKMAN J BRINKHUIS H CLEMENS SC CRONIN T DICKENS GR EYNAUD F GATTACCECA J JAKOBSSON M JORDAN RW KAMINSKI M KING J KOC N KRYLOV A MARTINEZ N MATTHIESSEN J MCINROY D MOORE TC ONODERA J O'REGAN M PALIKE H REA B SAKAMOTO T SMITH DC STEIN R ST JOHN K SUTO I SUZUKI N TAKAHASHI K WATANABE M YAMAMOTO M FARRELL J FRANK M KUBIK P JOKAT W KRISTOFFERSEN Y. RIO, DOMENICO The Cenozoic palaeoenvironment of the Arctic Ocean |
topic_facet |
Cenozoic Eocene greenhouse ecosystem ice-rafted debris paleoceanography paleoenvironment sea ice sediment core sedimentation rate surface water temperature effect |
description |
The history of the Arctic Ocean during the Cenozoic era (0-65 million years ago) is largely unknown from direct evidence. Here we present a Cenozoic palaeoceanographic record constructed from >400 m of sediment core from a recent drilling expedition to the Lomonosov ridge in the Arctic Ocean. Our record shows a palaeoenvironmental transition from a warm 'greenhouse' world, during the late Palaeocene and early Eocene epochs, to a colder 'icehouse' world influenced by sea ice and icebergs from the middle Eocene epoch to the present. For the most recent ∼14 Myr, we find sedimentation rates of 1-2 cm per thousand years, in stark contrast to the substantially lower rates proposed in earlier studies; this record of the Neogene reveals cooling of the Arctic that was synchronous with the expansion of Greenland ice (∼3.2 Myr ago) and East Antarctic ice (∼14 Myr ago). We find evidence for the first occurrence of ice-rafted debris in the middle Eocene epoch (∼45 Myr ago), some 35 Myr earlier than previously thought; fresh surface waters were present at ∼49 Myr ago, before the onset of ice-rafted debris. Also, the temperatures of surface waters during the Palaeocene/Eocene thermal maximum (∼55 Myr ago) appear to have been substantially warmer than previously estimated. The revised timing of the earliest Arctic cooling events coincides with those from Antarctica, supporting arguments for bipolar symmetry in climate change. © 2006 Nature Publishing Group. |
author2 |
Moran, K Backman, J Brinkhuis, H Clemens, Sc Cronin, T Dickens, Gr Eynaud, F Gattacceca, J Jakobsson, M Jordan, Rw Kaminski, M King, J Koc, N Krylov, A Martinez, N Matthiessen, J Mcinroy, D Moore, Tc Onodera, J O'Regan, M Palike, H Rea, B Rio, Domenico Sakamoto, T Smith, Dc Stein, R ST JOHN, K Suto, I Suzuki, N Takahashi, K Watanabe, M Yamamoto, M Farrell, J Frank, M Kubik, P Jokat, W Kristoffersen, Y. |
format |
Article in Journal/Newspaper |
author |
MORAN K BACKMAN J BRINKHUIS H CLEMENS SC CRONIN T DICKENS GR EYNAUD F GATTACCECA J JAKOBSSON M JORDAN RW KAMINSKI M KING J KOC N KRYLOV A MARTINEZ N MATTHIESSEN J MCINROY D MOORE TC ONODERA J O'REGAN M PALIKE H REA B SAKAMOTO T SMITH DC STEIN R ST JOHN K SUTO I SUZUKI N TAKAHASHI K WATANABE M YAMAMOTO M FARRELL J FRANK M KUBIK P JOKAT W KRISTOFFERSEN Y. RIO, DOMENICO |
author_facet |
MORAN K BACKMAN J BRINKHUIS H CLEMENS SC CRONIN T DICKENS GR EYNAUD F GATTACCECA J JAKOBSSON M JORDAN RW KAMINSKI M KING J KOC N KRYLOV A MARTINEZ N MATTHIESSEN J MCINROY D MOORE TC ONODERA J O'REGAN M PALIKE H REA B SAKAMOTO T SMITH DC STEIN R ST JOHN K SUTO I SUZUKI N TAKAHASHI K WATANABE M YAMAMOTO M FARRELL J FRANK M KUBIK P JOKAT W KRISTOFFERSEN Y. RIO, DOMENICO |
author_sort |
MORAN K |
title |
The Cenozoic palaeoenvironment of the Arctic Ocean |
title_short |
The Cenozoic palaeoenvironment of the Arctic Ocean |
title_full |
The Cenozoic palaeoenvironment of the Arctic Ocean |
title_fullStr |
The Cenozoic palaeoenvironment of the Arctic Ocean |
title_full_unstemmed |
The Cenozoic palaeoenvironment of the Arctic Ocean |
title_sort |
cenozoic palaeoenvironment of the arctic ocean |
publishDate |
2006 |
url |
http://hdl.handle.net/11577/1564699 https://doi.org/10.1038/nature04800 |
geographic |
Arctic Antarctic Arctic Ocean Greenland |
geographic_facet |
Arctic Antarctic Arctic Ocean Greenland |
genre |
Antarc* Antarctic Antarctica Arctic Arctic Ocean Climate change Greenland Iceberg* Iceberg* Lomonosov Ridge Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Arctic Arctic Ocean Climate change Greenland Iceberg* Iceberg* Lomonosov Ridge Sea ice |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000237920800039 volume:441 firstpage:601 lastpage:605 numberofpages:5 journal:NATURE http://hdl.handle.net/11577/1564699 doi:10.1038/nature04800 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33745256185 |
op_doi |
https://doi.org/10.1038/nature04800 |
container_title |
Nature |
container_volume |
441 |
container_issue |
7093 |
container_start_page |
601 |
op_container_end_page |
605 |
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1796300677684658176 |