10.6084/m9.figshare.3454046.v1
Sigurjón B. Thórarinsson
Sigurjón B.
Thórarinsson
Ulf Söderlund
Ulf
Söderlund
Arne Døssing
Arne
Døssing
Paul M. Holm
Paul M.
Holm
Richard E. Ernst
Richard E.
Ernst
Christian Tegner
Christian
Tegner
Rift magmatism on the Eurasia basin margin: U–Pb baddeleyite ages of alkaline dyke swarms in North Greenland
Geological Society of London
2016
rifting
Eurasia basin margin
North Greenland
Arctic
dyke swarms
trace tectonomagmatic processes
dykes
Geology
2016-06-21 11:51:44
Journal contribution
https://geolsoc.figshare.com/articles/journal_contribution/Rift_magmatism_on_the_Eurasia_basin_margin_U_Pb_baddeleyite_ages_of_alkaline_dyke_swarms_in_North_Greenland/3454046
<p>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.
</p>