Magnetostratigraphy in the eastern Arctic Ocean, further palaeomagnetic results from Ymer-80 cores
The reconstruction of palaeoceanographic events in the Canadian Arctic Ocean for the last 4.5 Ma is based on palaeomagnetic reversal stratigraphy of deep sea cores (Herman & Hopkins 1980). The interpretation of palaeomagnetic results in terms of genuine geomagnetic reversals results in sedimenta...
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Norwegian Polar Institute
1987
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Online Access: | https://polarresearch.net/index.php/polar/article/view/2472 https://doi.org/10.3402/polar.v5i3.6900 |
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ftjpolarres:oai:journals.openacademia.net:article/2472 2023-05-15T14:49:40+02:00 Magnetostratigraphy in the eastern Arctic Ocean, further palaeomagnetic results from Ymer-80 cores Løvlie, Reidar 1987-01-12 application/pdf https://polarresearch.net/index.php/polar/article/view/2472 https://doi.org/10.3402/polar.v5i3.6900 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2472/5723 https://polarresearch.net/index.php/polar/article/view/2472 doi:10.3402/polar.v5i3.6900 Copyright (c) 2018 Polar Research Polar Research; Vol. 5 No. 3 (1987); 317-318 1751-8369 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1987 ftjpolarres https://doi.org/10.3402/polar.v5i3.6900 2021-11-11T19:12:43Z The reconstruction of palaeoceanographic events in the Canadian Arctic Ocean for the last 4.5 Ma is based on palaeomagnetic reversal stratigraphy of deep sea cores (Herman & Hopkins 1980). The interpretation of palaeomagnetic results in terms of genuine geomagnetic reversals results in sedimentation rates of the order of mm/ka, which is one order of magnitude less than corresponding accumulation rates for the eastern Arctic Ocean. The latter rate is founded on the interpretation of palaeomagnetic results from three cores north of Spitshergen, which carry two zones with negative remanent inclinations confined within oxygen isotope stages 2-3 (Ldvlie et al. 1986). The chronostratigraphic framework is based on CI4, amino acid and oxygen isotope stratigraphies, and the reversals are easily correlated with short duration excursions occurring around 30 and 60 ka, respectively. Since neither polarity chrons nor excursions appear to have unique directional signatures, reversed palaeomagnetic directions cannot be assigned to polarity chrons/subchrons without independent chronostratigraphic control. Article in Journal/Newspaper Arctic Arctic Ocean Polar Research Polar Research (E-Journal) Arctic Arctic Ocean Polar Research 5 3 317 318 |
institution |
Open Polar |
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Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
description |
The reconstruction of palaeoceanographic events in the Canadian Arctic Ocean for the last 4.5 Ma is based on palaeomagnetic reversal stratigraphy of deep sea cores (Herman & Hopkins 1980). The interpretation of palaeomagnetic results in terms of genuine geomagnetic reversals results in sedimentation rates of the order of mm/ka, which is one order of magnitude less than corresponding accumulation rates for the eastern Arctic Ocean. The latter rate is founded on the interpretation of palaeomagnetic results from three cores north of Spitshergen, which carry two zones with negative remanent inclinations confined within oxygen isotope stages 2-3 (Ldvlie et al. 1986). The chronostratigraphic framework is based on CI4, amino acid and oxygen isotope stratigraphies, and the reversals are easily correlated with short duration excursions occurring around 30 and 60 ka, respectively. Since neither polarity chrons nor excursions appear to have unique directional signatures, reversed palaeomagnetic directions cannot be assigned to polarity chrons/subchrons without independent chronostratigraphic control. |
format |
Article in Journal/Newspaper |
author |
Løvlie, Reidar |
spellingShingle |
Løvlie, Reidar Magnetostratigraphy in the eastern Arctic Ocean, further palaeomagnetic results from Ymer-80 cores |
author_facet |
Løvlie, Reidar |
author_sort |
Løvlie, Reidar |
title |
Magnetostratigraphy in the eastern Arctic Ocean, further palaeomagnetic results from Ymer-80 cores |
title_short |
Magnetostratigraphy in the eastern Arctic Ocean, further palaeomagnetic results from Ymer-80 cores |
title_full |
Magnetostratigraphy in the eastern Arctic Ocean, further palaeomagnetic results from Ymer-80 cores |
title_fullStr |
Magnetostratigraphy in the eastern Arctic Ocean, further palaeomagnetic results from Ymer-80 cores |
title_full_unstemmed |
Magnetostratigraphy in the eastern Arctic Ocean, further palaeomagnetic results from Ymer-80 cores |
title_sort |
magnetostratigraphy in the eastern arctic ocean, further palaeomagnetic results from ymer-80 cores |
publisher |
Norwegian Polar Institute |
publishDate |
1987 |
url |
https://polarresearch.net/index.php/polar/article/view/2472 https://doi.org/10.3402/polar.v5i3.6900 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Polar Research |
genre_facet |
Arctic Arctic Ocean Polar Research |
op_source |
Polar Research; Vol. 5 No. 3 (1987); 317-318 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2472/5723 https://polarresearch.net/index.php/polar/article/view/2472 doi:10.3402/polar.v5i3.6900 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v5i3.6900 |
container_title |
Polar Research |
container_volume |
5 |
container_issue |
3 |
container_start_page |
317 |
op_container_end_page |
318 |
_version_ |
1766320749412352000 |