New palaeomagnetic results from the Oslo Graben, a Permian Superchron lava province
International audience We have performed an extended palaeomagnetic study of the Oslo Graben volcanics, compared to the study of half a century ago by van Everdingen, using modern techniques and a four times larger amount of sites, plus additional rock magnetic experiments. We conclude that the aver...
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Online Access: | https://hal.science/hal-01854921 https://hal.science/hal-01854921/document https://hal.science/hal-01854921/file/ggu351.pdf https://doi.org/10.1093/gji/ggu351 |
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ftinsu:oai:HAL:hal-01854921v1 2023-12-03T10:22:58+01:00 New palaeomagnetic results from the Oslo Graben, a Permian Superchron lava province Haldan, M.M. Meijers, M.J.M. Langereis, C.G. Larsen, B.T. Heyer, H. Paleomagnetic Laboratory Fort Hoofddijk Universiteit Utrecht / Utrecht University Utrecht Department of Earth Sciences Minneapolis University of Minnesota Twin Cities (UMN) University of Minnesota System-University of Minnesota System Géoazur (GEOAZUR 7329) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) Det Norske Oljeselskap Fjordveien 27 2014-12-01 https://hal.science/hal-01854921 https://hal.science/hal-01854921/document https://hal.science/hal-01854921/file/ggu351.pdf https://doi.org/10.1093/gji/ggu351 en eng HAL CCSD Oxford University Press (OUP) info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggu351 hal-01854921 https://hal.science/hal-01854921 https://hal.science/hal-01854921/document https://hal.science/hal-01854921/file/ggu351.pdf doi:10.1093/gji/ggu351 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0956-540X EISSN: 1365-246X Geophysical Journal International https://hal.science/hal-01854921 Geophysical Journal International, 2014, 199 (3), pp.1554 - 1571. ⟨10.1093/gji/ggu351⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2014 ftinsu https://doi.org/10.1093/gji/ggu351 2023-11-08T17:27:01Z International audience We have performed an extended palaeomagnetic study of the Oslo Graben volcanics, compared to the study of half a century ago by van Everdingen, using modern techniques and a four times larger amount of sites, plus additional rock magnetic experiments. We conclude that the average direction (D = 204.0, I = −37.9, k = 46.9, α95 = 2.0) and associated palaeomagnetic pole (λ = 48.3, ϕ = 155.5, K = 52.2, A95 = 1.9) of the Krokskogen and Vestfold volcanics together are statistically identical to those of the earlier study. This gives confidence in the fact that older palaeomagnetic studies can be reliable and robust, even though methods have improved. Our larger number of samples, and better age constraints, enable us to separate the data into two major intervals: the younger, on average, Krokskogen area and the older Vestfold area. The results show firstly that palaeolatitudes are slightly higher than predicted by the latest apparent polar wander path (APWP) for Eurasia by Torsvik et al. These data support an early Permian Pangaea A configuration and do not necessitate a Pangaea B configuration.The larger data set also allows us to assess the distribution of the characteristic remanent magnetization directions of the Oslo Graben in terms of geomagnetic field behaviour, which were acquired during a long period of dominantly single polarity the Permo-Carboniferous Reversed Superchron (PCRS). The distributions show a significantly lower virtual geomagnetic pole (VGP) scatter at the observed (low) latitudes than expected from a compilation from lavas of the last 5 Myr. The data do however show excellent agreement with the scatter observed both during the Cretaceous Normal Superchron and the PCRS. A comparison of the directional distributions in terms of elongation is less discriminating, since the large errors in all cases allow a fit to the predicted elongation/inclination behaviour of the TK03.GAD model. Article in Journal/Newspaper Geomagnetic Pole Institut national des sciences de l'Univers: HAL-INSU Vestfold Geophysical Journal International 199 3 1554 1571 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Haldan, M.M. Meijers, M.J.M. Langereis, C.G. Larsen, B.T. Heyer, H. New palaeomagnetic results from the Oslo Graben, a Permian Superchron lava province |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience We have performed an extended palaeomagnetic study of the Oslo Graben volcanics, compared to the study of half a century ago by van Everdingen, using modern techniques and a four times larger amount of sites, plus additional rock magnetic experiments. We conclude that the average direction (D = 204.0, I = −37.9, k = 46.9, α95 = 2.0) and associated palaeomagnetic pole (λ = 48.3, ϕ = 155.5, K = 52.2, A95 = 1.9) of the Krokskogen and Vestfold volcanics together are statistically identical to those of the earlier study. This gives confidence in the fact that older palaeomagnetic studies can be reliable and robust, even though methods have improved. Our larger number of samples, and better age constraints, enable us to separate the data into two major intervals: the younger, on average, Krokskogen area and the older Vestfold area. The results show firstly that palaeolatitudes are slightly higher than predicted by the latest apparent polar wander path (APWP) for Eurasia by Torsvik et al. These data support an early Permian Pangaea A configuration and do not necessitate a Pangaea B configuration.The larger data set also allows us to assess the distribution of the characteristic remanent magnetization directions of the Oslo Graben in terms of geomagnetic field behaviour, which were acquired during a long period of dominantly single polarity the Permo-Carboniferous Reversed Superchron (PCRS). The distributions show a significantly lower virtual geomagnetic pole (VGP) scatter at the observed (low) latitudes than expected from a compilation from lavas of the last 5 Myr. The data do however show excellent agreement with the scatter observed both during the Cretaceous Normal Superchron and the PCRS. A comparison of the directional distributions in terms of elongation is less discriminating, since the large errors in all cases allow a fit to the predicted elongation/inclination behaviour of the TK03.GAD model. |
author2 |
Paleomagnetic Laboratory Fort Hoofddijk Universiteit Utrecht / Utrecht University Utrecht Department of Earth Sciences Minneapolis University of Minnesota Twin Cities (UMN) University of Minnesota System-University of Minnesota System Géoazur (GEOAZUR 7329) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) Det Norske Oljeselskap Fjordveien 27 |
format |
Article in Journal/Newspaper |
author |
Haldan, M.M. Meijers, M.J.M. Langereis, C.G. Larsen, B.T. Heyer, H. |
author_facet |
Haldan, M.M. Meijers, M.J.M. Langereis, C.G. Larsen, B.T. Heyer, H. |
author_sort |
Haldan, M.M. |
title |
New palaeomagnetic results from the Oslo Graben, a Permian Superchron lava province |
title_short |
New palaeomagnetic results from the Oslo Graben, a Permian Superchron lava province |
title_full |
New palaeomagnetic results from the Oslo Graben, a Permian Superchron lava province |
title_fullStr |
New palaeomagnetic results from the Oslo Graben, a Permian Superchron lava province |
title_full_unstemmed |
New palaeomagnetic results from the Oslo Graben, a Permian Superchron lava province |
title_sort |
new palaeomagnetic results from the oslo graben, a permian superchron lava province |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-01854921 https://hal.science/hal-01854921/document https://hal.science/hal-01854921/file/ggu351.pdf https://doi.org/10.1093/gji/ggu351 |
geographic |
Vestfold |
geographic_facet |
Vestfold |
genre |
Geomagnetic Pole |
genre_facet |
Geomagnetic Pole |
op_source |
ISSN: 0956-540X EISSN: 1365-246X Geophysical Journal International https://hal.science/hal-01854921 Geophysical Journal International, 2014, 199 (3), pp.1554 - 1571. ⟨10.1093/gji/ggu351⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggu351 hal-01854921 https://hal.science/hal-01854921 https://hal.science/hal-01854921/document https://hal.science/hal-01854921/file/ggu351.pdf doi:10.1093/gji/ggu351 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1093/gji/ggu351 |
container_title |
Geophysical Journal International |
container_volume |
199 |
container_issue |
3 |
container_start_page |
1554 |
op_container_end_page |
1571 |
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1784270999450025984 |