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 Ma in...
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2015
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ftdtupubl:oai:pure.atira.dk:publications/d25f0909-1303-4021-afa3-bf79a3cb0a15 2024-05-19T07:35:15+00:00 Rift magmatism on the Eurasia basin margin: U–Pb baddeleyite ages of alkaline dyke swarms in North Greenland Thórarinsson, Sigurjón B. Söderlund, Ulf Døssing, Arne Holm, Paul M. Ernst, Richard E. Tegner, Christian 2015 https://orbit.dtu.dk/en/publications/d25f0909-1303-4021-afa3-bf79a3cb0a15 https://doi.org/10.1144/jgs2015-049 eng eng https://orbit.dtu.dk/en/publications/d25f0909-1303-4021-afa3-bf79a3cb0a15 info:eu-repo/semantics/closedAccess Thórarinsson , 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 , pp. 721-726 . https://doi.org/10.1144/jgs2015-049 article 2015 ftdtupubl https://doi.org/10.1144/jgs2015-049 2024-05-01T00:21:07Z 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.Supplementary materials: U–Pb data are available at http://www.geolsoc.org.uk/SUP18857. Article in Journal/Newspaper Arctic Arctic Ocean Greenland North Greenland Technical University of Denmark: DTU Orbit Journal of the Geological Society 172 6 721 726 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
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.Supplementary materials: U–Pb data are available at http://www.geolsoc.org.uk/SUP18857. |
format |
Article in Journal/Newspaper |
author |
Thórarinsson, Sigurjón B. Söderlund, Ulf Døssing, Arne Holm, Paul M. Ernst, Richard E. Tegner, Christian |
spellingShingle |
Thórarinsson, Sigurjón B. Söderlund, Ulf Døssing, 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 |
author_facet |
Thórarinsson, Sigurjón B. Söderlund, Ulf Døssing, Arne Holm, Paul M. Ernst, Richard E. Tegner, Christian |
author_sort |
Thórarinsson, Sigurjón 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 |
publishDate |
2015 |
url |
https://orbit.dtu.dk/en/publications/d25f0909-1303-4021-afa3-bf79a3cb0a15 https://doi.org/10.1144/jgs2015-049 |
genre |
Arctic Arctic Ocean Greenland North Greenland |
genre_facet |
Arctic Arctic Ocean Greenland North Greenland |
op_source |
Thórarinsson , 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 , pp. 721-726 . https://doi.org/10.1144/jgs2015-049 |
op_relation |
https://orbit.dtu.dk/en/publications/d25f0909-1303-4021-afa3-bf79a3cb0a15 |
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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1799473805675986944 |