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 dykeswarms. To trace tectonomagmatic processes of the High Arctic, we present the first U–Pb ages for alkaline dyke swarms ofNorth Greenland. Concordia ages of 80.8 ± 0.6 and 82.1 ± 1.5 Ma indi...
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ftcopenhagenunip:oai:pure.atira.dk:publications/6c551a30-93a9-4f33-be6c-e5de5e1c502b 2024-04-28T08:07:52+00:00 Rift magmatism on the Eurasia basin margin:U–Pb baddeleyite ages of alkaline dyke swarms in North Greenland Þórarinsson, Sigurjón Böðvar Söderlund, Ulf Døssing, Arne Holm, Paul Martin Ernst, Richard E. Tegner, Christian 2015 https://curis.ku.dk/portal/da/publications/rift-magmatism-on-the-eurasia-basin-margin(6c551a30-93a9-4f33-be6c-e5de5e1c502b).html https://doi.org/10.1144/jgs2015-049 eng eng info:eu-repo/semantics/closedAccess Þórarinsson , S B , Söderlund , U , Døssing , A , Holm , P M , Ernst , R E & Tegner , C 2015 , ' Rift magmatism on the Eurasia basin margin : U–Pb baddeleyite ages of alkaline dyke swarms in North Greenland ' , Journal of the Geological Society , vol. 172 , no. 6 , 721 . https://doi.org/10.1144/jgs2015-049 article 2015 ftcopenhagenunip https://doi.org/10.1144/jgs2015-049 2024-04-11T00:22:37Z The opening of the Arctic Ocean involved multiple stages of continental rifting and intrusion of extensive dykeswarms. To trace tectonomagmatic processes of the High Arctic, we present the first U–Pb ages for alkaline dyke swarms ofNorth 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 theEurasia 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 University of Copenhagen: Research Journal of the Geological Society 172 6 721 726 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
The opening of the Arctic Ocean involved multiple stages of continental rifting and intrusion of extensive dykeswarms. To trace tectonomagmatic processes of the High Arctic, we present the first U–Pb ages for alkaline dyke swarms ofNorth 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 theEurasia Basin. The east–west dykes reflect local variations in the stress field associated with reactivated Palaeozoic faults |
format |
Article in Journal/Newspaper |
author |
Þórarinsson, Sigurjón Böðvar Söderlund, Ulf Døssing, Arne Holm, Paul Martin Ernst, Richard E. Tegner, Christian |
spellingShingle |
Þórarinsson, Sigurjón Böðvar Söderlund, Ulf Døssing, Arne Holm, Paul Martin Ernst, Richard E. Tegner, Christian Rift magmatism on the Eurasia basin margin:U–Pb baddeleyite ages of alkaline dyke swarms in North Greenland |
author_facet |
Þórarinsson, Sigurjón Böðvar Söderlund, Ulf Døssing, Arne Holm, Paul Martin Ernst, Richard E. Tegner, Christian |
author_sort |
Þórarinsson, Sigurjón Böðvar |
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 |
publishDate |
2015 |
url |
https://curis.ku.dk/portal/da/publications/rift-magmatism-on-the-eurasia-basin-margin(6c551a30-93a9-4f33-be6c-e5de5e1c502b).html https://doi.org/10.1144/jgs2015-049 |
genre |
Arctic Arctic Ocean Greenland North Greenland |
genre_facet |
Arctic Arctic Ocean Greenland North Greenland |
op_source |
Þórarinsson , S B , Söderlund , U , Døssing , A , Holm , P M , Ernst , R E & Tegner , C 2015 , ' Rift magmatism on the Eurasia basin margin : U–Pb baddeleyite ages of alkaline dyke swarms in North Greenland ' , Journal of the Geological Society , vol. 172 , no. 6 , 721 . https://doi.org/10.1144/jgs2015-049 |
op_rights |
info:eu-repo/semantics/closedAccess |
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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1797576832381353984 |