Orbital scale variations and timescales from the Arctic Ocean
We investigate geochemical measurements from the Arctic Coring Expedition to derive sedimentation rates for selected intervals in the early and middle Eocene. This analysis is performed by quantifying cyclical variations in physical property data and elemental concentrations derived with an X-ray fl...
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American Geophysical Union
2008
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Online Access: | https://orca.cardiff.ac.uk/id/eprint/7533/ https://orca.cardiff.ac.uk/id/eprint/7533/1/Palike%202008.pdf https://doi.org/10.1029/2007PA001490 |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:7533 2023-05-15T14:25:43+02:00 Orbital scale variations and timescales from the Arctic Ocean Pälike, H. Spofforth, D. J. A O'Regan, Matthew Gattacceca, J. 2008-03-19 application/pdf https://orca.cardiff.ac.uk/id/eprint/7533/ https://orca.cardiff.ac.uk/id/eprint/7533/1/Palike%202008.pdf https://doi.org/10.1029/2007PA001490 en eng American Geophysical Union https://orca.cardiff.ac.uk/id/eprint/7533/1/Palike%202008.pdf Pälike, H., Spofforth, D. J. A, O'Regan, Matthew and Gattacceca, J. 2008. Orbital scale variations and timescales from the Arctic Ocean. Paleoceanography 23 (1) , PA1S10. 10.1029/2007PA001490 https://doi.org/10.1029/2007PA001490 file https://orca.cardiff.ac.uk/7533/1/Palike%202008.pdf doi:10.1029/2007PA001490 QE Geology Article PeerReviewed 2008 ftunivcardiff https://doi.org/10.1029/2007PA001490 2022-09-25T20:16:07Z We investigate geochemical measurements from the Arctic Coring Expedition to derive sedimentation rates for selected intervals in the early and middle Eocene. This analysis is performed by quantifying cyclical variations in physical property data and elemental concentrations derived with an X-ray fluorescence (XRF) core scanner. Our results show that physical properties and XRF-derived elemental concentrations are coherent and correlated to each other. Changes in elemental concentrations occur on depth scales from decimeters to meters and correspond to varying contributions of detrital minerals and biogenic silica. We confirm and refine sedimentation rates of the order of 10 to 25 m Ma�1. These rates were obtained independently through biostratigraphic and magnetostratigraphic methods. We observe a strong imprint of astronomically sourced cycles, particularly through climatic precession. This observation allows us to test recently proposed theoretical calculations of insolation. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Cardiff University: ORCA (Online Research @ Cardiff) Arctic Arctic Ocean Paleoceanography 23 1 n/a n/a |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
topic |
QE Geology |
spellingShingle |
QE Geology Pälike, H. Spofforth, D. J. A O'Regan, Matthew Gattacceca, J. Orbital scale variations and timescales from the Arctic Ocean |
topic_facet |
QE Geology |
description |
We investigate geochemical measurements from the Arctic Coring Expedition to derive sedimentation rates for selected intervals in the early and middle Eocene. This analysis is performed by quantifying cyclical variations in physical property data and elemental concentrations derived with an X-ray fluorescence (XRF) core scanner. Our results show that physical properties and XRF-derived elemental concentrations are coherent and correlated to each other. Changes in elemental concentrations occur on depth scales from decimeters to meters and correspond to varying contributions of detrital minerals and biogenic silica. We confirm and refine sedimentation rates of the order of 10 to 25 m Ma�1. These rates were obtained independently through biostratigraphic and magnetostratigraphic methods. We observe a strong imprint of astronomically sourced cycles, particularly through climatic precession. This observation allows us to test recently proposed theoretical calculations of insolation. |
format |
Article in Journal/Newspaper |
author |
Pälike, H. Spofforth, D. J. A O'Regan, Matthew Gattacceca, J. |
author_facet |
Pälike, H. Spofforth, D. J. A O'Regan, Matthew Gattacceca, J. |
author_sort |
Pälike, H. |
title |
Orbital scale variations and timescales from the Arctic Ocean |
title_short |
Orbital scale variations and timescales from the Arctic Ocean |
title_full |
Orbital scale variations and timescales from the Arctic Ocean |
title_fullStr |
Orbital scale variations and timescales from the Arctic Ocean |
title_full_unstemmed |
Orbital scale variations and timescales from the Arctic Ocean |
title_sort |
orbital scale variations and timescales from the arctic ocean |
publisher |
American Geophysical Union |
publishDate |
2008 |
url |
https://orca.cardiff.ac.uk/id/eprint/7533/ https://orca.cardiff.ac.uk/id/eprint/7533/1/Palike%202008.pdf https://doi.org/10.1029/2007PA001490 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/7533/1/Palike%202008.pdf Pälike, H., Spofforth, D. J. A, O'Regan, Matthew and Gattacceca, J. 2008. Orbital scale variations and timescales from the Arctic Ocean. Paleoceanography 23 (1) , PA1S10. 10.1029/2007PA001490 https://doi.org/10.1029/2007PA001490 file https://orca.cardiff.ac.uk/7533/1/Palike%202008.pdf doi:10.1029/2007PA001490 |
op_doi |
https://doi.org/10.1029/2007PA001490 |
container_title |
Paleoceanography |
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23 |
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1 |
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n/a |
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_version_ |
1766298186885890048 |