The Early Carboniferous Magerøy dykes, northern Norway: palaeomagnetism and palaeogeography
Palaeomagnetic data from the 337 Ma Magerøy dykes (northern Norway) are of exceptionally high quality, and a positive contact test along with an existing regional result from the Silurian Honningsvåg Igneous Suite attests to a primary Early Carboniferous magnetic signature. The palaeomagnetic pole (...
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crcambridgeupr:10.1017/s0016756803008082 2024-09-15T17:57:45+00:00 The Early Carboniferous Magerøy dykes, northern Norway: palaeomagnetism and palaeogeography ROBERTS, R. J. TORSVIK, T. H. ANDERSEN, T. B. REHNSTRÖM, E. F. 2003 http://dx.doi.org/10.1017/s0016756803008082 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756803008082 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Geological Magazine volume 140, issue 4, page 443-451 ISSN 0016-7568 1469-5081 journal-article 2003 crcambridgeupr https://doi.org/10.1017/s0016756803008082 2024-08-28T04:03:25Z Palaeomagnetic data from the 337 Ma Magerøy dykes (northern Norway) are of exceptionally high quality, and a positive contact test along with an existing regional result from the Silurian Honningsvåg Igneous Suite attests to a primary Early Carboniferous magnetic signature. The palaeomagnetic pole (S14.8°, E320.1°, dp/dm=4.4/8.6°) is the first Early Carboniferous pole from Baltica, and implies that northernmost Norway–Greenland, the Barents Sea and Svalbard were located at tropical to low northerly latitudes at this time. Northward drift during Carboniferous times (5–6 cm/yr) as demonstrated from palaeomagnetic data is also reflected in the sedimentary facies in the Barents Sea realm, that is, a change from tropical (Early Carboniferous) to subtropical (20–30° N) carbonates and evaporites in the Late Carboniferous. The Magerøy dykes are continental tholeiites which intruded into a set of NW–SE-trending normal faults parallel to the Trollfjorden–Komagelva Fault Zone and the Magerøysundet Fault immediately to the north and south of Magerøya, respectively. These, and many other NW–SE-trending faults (onshore and offshore), were active during Late Palaeozoic extension, and the dykes were probably contemporaneous with the earliest syn-rift sedimentation in the Barents Sea (for example, the Nordkapp Basin). Article in Journal/Newspaper Barents Sea Greenland Honningsvåg Magerøya Nordkapp Nordkapp Basin Northern Norway Svalbard Cambridge University Press Geological Magazine 140 4 443 451 |
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English |
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Palaeomagnetic data from the 337 Ma Magerøy dykes (northern Norway) are of exceptionally high quality, and a positive contact test along with an existing regional result from the Silurian Honningsvåg Igneous Suite attests to a primary Early Carboniferous magnetic signature. The palaeomagnetic pole (S14.8°, E320.1°, dp/dm=4.4/8.6°) is the first Early Carboniferous pole from Baltica, and implies that northernmost Norway–Greenland, the Barents Sea and Svalbard were located at tropical to low northerly latitudes at this time. Northward drift during Carboniferous times (5–6 cm/yr) as demonstrated from palaeomagnetic data is also reflected in the sedimentary facies in the Barents Sea realm, that is, a change from tropical (Early Carboniferous) to subtropical (20–30° N) carbonates and evaporites in the Late Carboniferous. The Magerøy dykes are continental tholeiites which intruded into a set of NW–SE-trending normal faults parallel to the Trollfjorden–Komagelva Fault Zone and the Magerøysundet Fault immediately to the north and south of Magerøya, respectively. These, and many other NW–SE-trending faults (onshore and offshore), were active during Late Palaeozoic extension, and the dykes were probably contemporaneous with the earliest syn-rift sedimentation in the Barents Sea (for example, the Nordkapp Basin). |
format |
Article in Journal/Newspaper |
author |
ROBERTS, R. J. TORSVIK, T. H. ANDERSEN, T. B. REHNSTRÖM, E. F. |
spellingShingle |
ROBERTS, R. J. TORSVIK, T. H. ANDERSEN, T. B. REHNSTRÖM, E. F. The Early Carboniferous Magerøy dykes, northern Norway: palaeomagnetism and palaeogeography |
author_facet |
ROBERTS, R. J. TORSVIK, T. H. ANDERSEN, T. B. REHNSTRÖM, E. F. |
author_sort |
ROBERTS, R. J. |
title |
The Early Carboniferous Magerøy dykes, northern Norway: palaeomagnetism and palaeogeography |
title_short |
The Early Carboniferous Magerøy dykes, northern Norway: palaeomagnetism and palaeogeography |
title_full |
The Early Carboniferous Magerøy dykes, northern Norway: palaeomagnetism and palaeogeography |
title_fullStr |
The Early Carboniferous Magerøy dykes, northern Norway: palaeomagnetism and palaeogeography |
title_full_unstemmed |
The Early Carboniferous Magerøy dykes, northern Norway: palaeomagnetism and palaeogeography |
title_sort |
early carboniferous magerøy dykes, northern norway: palaeomagnetism and palaeogeography |
publisher |
Cambridge University Press (CUP) |
publishDate |
2003 |
url |
http://dx.doi.org/10.1017/s0016756803008082 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756803008082 |
genre |
Barents Sea Greenland Honningsvåg Magerøya Nordkapp Nordkapp Basin Northern Norway Svalbard |
genre_facet |
Barents Sea Greenland Honningsvåg Magerøya Nordkapp Nordkapp Basin Northern Norway Svalbard |
op_source |
Geological Magazine volume 140, issue 4, page 443-451 ISSN 0016-7568 1469-5081 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0016756803008082 |
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Geological Magazine |
container_volume |
140 |
container_issue |
4 |
container_start_page |
443 |
op_container_end_page |
451 |
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1810433909455847424 |