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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2008
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ftsouthampton:oai:eprints.soton.ac.uk:50751 2023-08-27T04:06:32+02:00 Orbital scale variations and timescales from the Arctic Ocean Pälike, H. Spofforth, D.J.A. O'Regan, M. Gattacceca, J. 2008 text https://eprints.soton.ac.uk/50751/ https://eprints.soton.ac.uk/50751/1/Palike_2007PA001490.pdf http://www.agu.org/journals/pa/pa0801/2007PA001490/ en eng https://eprints.soton.ac.uk/50751/1/Palike_2007PA001490.pdf Pälike, H., Spofforth, D.J.A., O'Regan, M. and Gattacceca, J. (2008) Orbital scale variations and timescales from the Arctic Ocean. Paleoceanography, 23, PA1S10. (doi:10.1029/2007PA001490 <http://dx.doi.org/10.1029/2007PA001490>). Article PeerReviewed 2008 ftsouthampton https://doi.org/10.1029/2007PA001490 2023-08-03T22:19:09Z 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 University of Southampton: e-Prints Soton Arctic Arctic Ocean Paleoceanography 23 1 n/a n/a |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
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, M. Gattacceca, J. |
spellingShingle |
Pälike, H. Spofforth, D.J.A. O'Regan, M. Gattacceca, J. Orbital scale variations and timescales from the Arctic Ocean |
author_facet |
Pälike, H. Spofforth, D.J.A. O'Regan, M. 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 |
publishDate |
2008 |
url |
https://eprints.soton.ac.uk/50751/ https://eprints.soton.ac.uk/50751/1/Palike_2007PA001490.pdf http://www.agu.org/journals/pa/pa0801/2007PA001490/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_relation |
https://eprints.soton.ac.uk/50751/1/Palike_2007PA001490.pdf Pälike, H., Spofforth, D.J.A., O'Regan, M. and Gattacceca, J. (2008) Orbital scale variations and timescales from the Arctic Ocean. Paleoceanography, 23, PA1S10. (doi:10.1029/2007PA001490 <http://dx.doi.org/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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n/a |
_version_ |
1775347434963075072 |