Rift magmatism on the Eurasia basin margin: U-Pb baddeleyite ages of alkaline dyke swarms in North Greenland
The opening of the Arctic Ocean involved multiple stages of continental rifting and intrusion of extensive dyke swarms. To trace tectonomagmatic processes of the High Arctic, we present the first U-Pb ages for alkaline dyke swarms of North Greenland. Concordia ages of 80.8 +/- 0.6 and 82.1 +/- 1.5 M...
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Geological Society of London
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Online Access: | https://lup.lub.lu.se/record/8389411 https://doi.org/10.1144/jgs2015-049 |
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ftulundlup:oai:lup.lub.lu.se:45e38f17-6238-4cc9-9567-f8b0b46a2d72 2023-05-15T14:50:45+02:00 Rift magmatism on the Eurasia basin margin: U-Pb baddeleyite ages of alkaline dyke swarms in North Greenland Thorarinsson, Sigurjon B. Söderlund, Ulf Dossing, Arne Holm, Paul M. Ernst, Richard E. Tegner, Christian 2015 https://lup.lub.lu.se/record/8389411 https://doi.org/10.1144/jgs2015-049 eng eng Geological Society of London https://lup.lub.lu.se/record/8389411 http://dx.doi.org/10.1144/jgs2015-049 wos:000363986900004 scopus:84945914662 Journal of the Geological Society; 172(6), pp 721-726 (2015) ISSN: 2041-479X Geology contributiontojournal/article info:eu-repo/semantics/article text 2015 ftulundlup https://doi.org/10.1144/jgs2015-049 2023-02-01T23:29:07Z The opening of the Arctic Ocean involved multiple stages of continental rifting and intrusion of extensive dyke swarms. To trace tectonomagmatic processes of the High Arctic, we present the first U-Pb ages for alkaline dyke swarms of North Greenland. Concordia ages of 80.8 +/- 0.6 and 82.1 +/- 1.5 Ma indicate that north-south and east-west dykes are coeval. The north-south dykes reflect initial east-west rifting that led to break-up along the Gakkel Ridge and formation of the Eurasia Basin. The east-west dykes reflect local variations in the stress field associated with reactivated Palaeozoic faults. Article in Journal/Newspaper Arctic Arctic Ocean Greenland North Greenland Lund University Publications (LUP) Arctic Arctic Ocean Eurasia Basin ENVELOPE(80.000,80.000,87.000,87.000) Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Greenland Journal of the Geological Society 172 6 721 726 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology |
spellingShingle |
Geology Thorarinsson, Sigurjon B. Söderlund, Ulf Dossing, Arne Holm, Paul M. Ernst, Richard E. Tegner, Christian Rift magmatism on the Eurasia basin margin: U-Pb baddeleyite ages of alkaline dyke swarms in North Greenland |
topic_facet |
Geology |
description |
The opening of the Arctic Ocean involved multiple stages of continental rifting and intrusion of extensive dyke swarms. To trace tectonomagmatic processes of the High Arctic, we present the first U-Pb ages for alkaline dyke swarms of North Greenland. Concordia ages of 80.8 +/- 0.6 and 82.1 +/- 1.5 Ma indicate that north-south and east-west dykes are coeval. The north-south dykes reflect initial east-west rifting that led to break-up along the Gakkel Ridge and formation of the Eurasia Basin. The east-west dykes reflect local variations in the stress field associated with reactivated Palaeozoic faults. |
format |
Article in Journal/Newspaper |
author |
Thorarinsson, Sigurjon B. Söderlund, Ulf Dossing, Arne Holm, Paul M. Ernst, Richard E. Tegner, Christian |
author_facet |
Thorarinsson, Sigurjon B. Söderlund, Ulf Dossing, Arne Holm, Paul M. Ernst, Richard E. Tegner, Christian |
author_sort |
Thorarinsson, Sigurjon B. |
title |
Rift magmatism on the Eurasia basin margin: U-Pb baddeleyite ages of alkaline dyke swarms in North Greenland |
title_short |
Rift magmatism on the Eurasia basin margin: U-Pb baddeleyite ages of alkaline dyke swarms in North Greenland |
title_full |
Rift magmatism on the Eurasia basin margin: U-Pb baddeleyite ages of alkaline dyke swarms in North Greenland |
title_fullStr |
Rift magmatism on the Eurasia basin margin: U-Pb baddeleyite ages of alkaline dyke swarms in North Greenland |
title_full_unstemmed |
Rift magmatism on the Eurasia basin margin: U-Pb baddeleyite ages of alkaline dyke swarms in North Greenland |
title_sort |
rift magmatism on the eurasia basin margin: u-pb baddeleyite ages of alkaline dyke swarms in north greenland |
publisher |
Geological Society of London |
publishDate |
2015 |
url |
https://lup.lub.lu.se/record/8389411 https://doi.org/10.1144/jgs2015-049 |
long_lat |
ENVELOPE(80.000,80.000,87.000,87.000) ENVELOPE(90.000,90.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Eurasia Basin Gakkel Ridge Greenland |
geographic_facet |
Arctic Arctic Ocean Eurasia Basin Gakkel Ridge Greenland |
genre |
Arctic Arctic Ocean Greenland North Greenland |
genre_facet |
Arctic Arctic Ocean Greenland North Greenland |
op_source |
Journal of the Geological Society; 172(6), pp 721-726 (2015) ISSN: 2041-479X |
op_relation |
https://lup.lub.lu.se/record/8389411 http://dx.doi.org/10.1144/jgs2015-049 wos:000363986900004 scopus:84945914662 |
op_doi |
https://doi.org/10.1144/jgs2015-049 |
container_title |
Journal of the Geological Society |
container_volume |
172 |
container_issue |
6 |
container_start_page |
721 |
op_container_end_page |
726 |
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1766321802266542080 |