Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating
We employ U–Pb calcite dating of structurally-controlled fracture fills within crystalline Caledonian basement in western Norway to reveal subtle large-scale tectonic events that affected this rifted continental margin. The ages (15 in total) fall into four distinct groups with ages mainly ranging f...
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Online Access: | https://hdl.handle.net/11250/3103170 https://doi.org/10.1038/s41598-023-34649-z |
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fthsvestlandet:oai:hvlopen.brage.unit.no:11250/3103170 2024-03-03T08:45:46+00:00 Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating Hestnes, Åse Drost, Kerstin Sømme, Tor Oftedal Gasser, Deta Scheiber, Thomas Linge, Henriette Chew, David Jacobs, Joachim 2023 application/pdf https://hdl.handle.net/11250/3103170 https://doi.org/10.1038/s41598-023-34649-z eng eng Nature Research Scientific Reports. 2023, 13 (1), . urn:issn:2045-2322 https://hdl.handle.net/11250/3103170 https://doi.org/10.1038/s41598-023-34649-z cristin:2153991 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © The Author(s) 2023 9 13 Scientific Reports 1 7876 Peer reviewed Journal article 2023 fthsvestlandet https://doi.org/10.1038/s41598-023-34649-z 2024-02-02T12:40:51Z We employ U–Pb calcite dating of structurally-controlled fracture fills within crystalline Caledonian basement in western Norway to reveal subtle large-scale tectonic events that affected this rifted continental margin. The ages (15 in total) fall into four distinct groups with ages mainly ranging from latest Cretaceous to Pleistocene. (1) The three oldest (Triassic-Jurassic) ages refine the complex faulting history of a reactivated fault strand originated from the Caledonian collapse and broadly correlate with known rifting events offshore. (2) Two ages of ca. 90–80 Ma relate to lithospheric stretching and normal fault reactivation of a major ENE-WSW trending late Caledonian shear zone. (3) We correlate five ages between ca. 70 and 60 Ma with far-field effects and dynamic uplift related to the proto-Iceland mantle plume, the effect and extent of which is highly debated. (4) The five youngest ages (< 50 Ma) from distinct NE–SW trending faults are interpreted to represent several episodes of post-breakup fracture dilation, indicating a long-lived Cenozoic deformation history. Our new U–Pb data combined with structural and isotopic data show that much larger tracts of the uplifted continental margin of western Norway have been affected by far-field tectonic stresses than previously anticipated, with deformation continuing into the late Cenozoic. publishedVersion Article in Journal/Newspaper Iceland Høgskulen på Vestlandet: HVL Open Norway Scientific Reports 13 1 |
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Høgskulen på Vestlandet: HVL Open |
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fthsvestlandet |
language |
English |
description |
We employ U–Pb calcite dating of structurally-controlled fracture fills within crystalline Caledonian basement in western Norway to reveal subtle large-scale tectonic events that affected this rifted continental margin. The ages (15 in total) fall into four distinct groups with ages mainly ranging from latest Cretaceous to Pleistocene. (1) The three oldest (Triassic-Jurassic) ages refine the complex faulting history of a reactivated fault strand originated from the Caledonian collapse and broadly correlate with known rifting events offshore. (2) Two ages of ca. 90–80 Ma relate to lithospheric stretching and normal fault reactivation of a major ENE-WSW trending late Caledonian shear zone. (3) We correlate five ages between ca. 70 and 60 Ma with far-field effects and dynamic uplift related to the proto-Iceland mantle plume, the effect and extent of which is highly debated. (4) The five youngest ages (< 50 Ma) from distinct NE–SW trending faults are interpreted to represent several episodes of post-breakup fracture dilation, indicating a long-lived Cenozoic deformation history. Our new U–Pb data combined with structural and isotopic data show that much larger tracts of the uplifted continental margin of western Norway have been affected by far-field tectonic stresses than previously anticipated, with deformation continuing into the late Cenozoic. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Hestnes, Åse Drost, Kerstin Sømme, Tor Oftedal Gasser, Deta Scheiber, Thomas Linge, Henriette Chew, David Jacobs, Joachim |
spellingShingle |
Hestnes, Åse Drost, Kerstin Sømme, Tor Oftedal Gasser, Deta Scheiber, Thomas Linge, Henriette Chew, David Jacobs, Joachim Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating |
author_facet |
Hestnes, Åse Drost, Kerstin Sømme, Tor Oftedal Gasser, Deta Scheiber, Thomas Linge, Henriette Chew, David Jacobs, Joachim |
author_sort |
Hestnes, Åse |
title |
Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating |
title_short |
Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating |
title_full |
Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating |
title_fullStr |
Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating |
title_full_unstemmed |
Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating |
title_sort |
constraining the tectonic evolution of rifted continental margins by u–pb calcite dating |
publisher |
Nature Research |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3103170 https://doi.org/10.1038/s41598-023-34649-z |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
9 13 Scientific Reports 1 7876 |
op_relation |
Scientific Reports. 2023, 13 (1), . urn:issn:2045-2322 https://hdl.handle.net/11250/3103170 https://doi.org/10.1038/s41598-023-34649-z cristin:2153991 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © The Author(s) 2023 |
op_doi |
https://doi.org/10.1038/s41598-023-34649-z |
container_title |
Scientific Reports |
container_volume |
13 |
container_issue |
1 |
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1792501417013936128 |