The Early Carboniferous Mageroy dykes, northern Norway: palaeomagnetism and palaeogeography
(2003) In Geological Magazine 140(4). p.443-451- Abstract
- Palaeomagnetic data from the 337 Ma Mageroy dykes (northern Norway) are of exceptionally high quality, and a positive contact test along with an existing regional result from the Silurian Honningsvag Igneous Suite attests to a primary Early Carboniferous magnetic signature. The palaeomagnetic pole (S 14.8degrees, E320.1degrees, dp/dm = 4.4/8.6degrees) 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... (More)
- Palaeomagnetic data from the 337 Ma Mageroy dykes (northern Norway) are of exceptionally high quality, and a positive contact test along with an existing regional result from the Silurian Honningsvag Igneous Suite attests to a primary Early Carboniferous magnetic signature. The palaeomagnetic pole (S 14.8degrees, E320.1degrees, dp/dm = 4.4/8.6degrees) 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 (20-30degrees N) carbonates and evaporites in the Late Carboniferous. The Mageroy dykes are continental tholeiites which intruded into a set of NW-SE-trending normal faults parallel to the Trollfjorden-Komagelva Fault Zone and the Mageroysundet Fault immediately to the north and south of Mageroya, 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). (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/299812
- author
- Roberts, RJ ; Torsvik, TH ; Andersen, TB and Rehnström, Emma LU
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- palaeogeography, Carboniferous, Norway, palaeomagnetism
- in
- Geological Magazine
- volume
- 140
- issue
- 4
- pages
- 443 - 451
- publisher
- Cambridge University Press
- external identifiers
-
- wos:000185583600004
- scopus:0141484427
- ISSN
- 0016-7568
- DOI
- 10.1017/S0016756803008082
- language
- English
- LU publication?
- yes
- id
- 720bebdc-c02e-4878-8ed8-9df4bcb6dfb2 (old id 299812)
- date added to LUP
- 2016-04-01 12:27:02
- date last changed
- 2022-02-18 22:43:58
@article{720bebdc-c02e-4878-8ed8-9df4bcb6dfb2,
abstract = {{Palaeomagnetic data from the 337 Ma Mageroy dykes (northern Norway) are of exceptionally high quality, and a positive contact test along with an existing regional result from the Silurian Honningsvag Igneous Suite attests to a primary Early Carboniferous magnetic signature. The palaeomagnetic pole (S 14.8degrees, E320.1degrees, dp/dm = 4.4/8.6degrees) 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 (20-30degrees N) carbonates and evaporites in the Late Carboniferous. The Mageroy dykes are continental tholeiites which intruded into a set of NW-SE-trending normal faults parallel to the Trollfjorden-Komagelva Fault Zone and the Mageroysundet Fault immediately to the north and south of Mageroya, 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).}},
author = {{Roberts, RJ and Torsvik, TH and Andersen, TB and Rehnström, Emma}},
issn = {{0016-7568}},
keywords = {{palaeogeography; Carboniferous; Norway; palaeomagnetism}},
language = {{eng}},
number = {{4}},
pages = {{443--451}},
publisher = {{Cambridge University Press}},
series = {{Geological Magazine}},
title = {{The Early Carboniferous Mageroy dykes, northern Norway: palaeomagnetism and palaeogeography}},
url = {{http://dx.doi.org/10.1017/S0016756803008082}},
doi = {{10.1017/S0016756803008082}},
volume = {{140}},
year = {{2003}},
}