Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating
Abstract 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...
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ftdoajarticles:oai:doaj.org/article:88f1bd68f8414d65877680ebe13fb8c7 2023-06-11T04:13:11+02:00 Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating Åse Hestnes Kerstin Drost Tor O. Sømme Deta Gasser Thomas Scheiber Henriette Linge David Chew Joachim Jacobs 2023-05-01T00:00:00Z https://doi.org/10.1038/s41598-023-34649-z https://doaj.org/article/88f1bd68f8414d65877680ebe13fb8c7 EN eng Nature Portfolio https://doi.org/10.1038/s41598-023-34649-z https://doaj.org/toc/2045-2322 doi:10.1038/s41598-023-34649-z 2045-2322 https://doaj.org/article/88f1bd68f8414d65877680ebe13fb8c7 Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023) Medicine R Science Q article 2023 ftdoajarticles https://doi.org/10.1038/s41598-023-34649-z 2023-05-28T00:38:06Z Abstract 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. Article in Journal/Newspaper Iceland Directory of Open Access Journals: DOAJ Articles Norway Scientific Reports 13 1 |
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Medicine R Science Q |
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Medicine R Science Q Åse Hestnes Kerstin Drost Tor O. Sømme Deta Gasser Thomas Scheiber Henriette Linge David Chew Joachim Jacobs Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating |
topic_facet |
Medicine R Science Q |
description |
Abstract 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. |
format |
Article in Journal/Newspaper |
author |
Åse Hestnes Kerstin Drost Tor O. Sømme Deta Gasser Thomas Scheiber Henriette Linge David Chew Joachim Jacobs |
author_facet |
Åse Hestnes Kerstin Drost Tor O. Sømme Deta Gasser Thomas Scheiber Henriette Linge David Chew Joachim Jacobs |
author_sort |
Åse Hestnes |
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 Portfolio |
publishDate |
2023 |
url |
https://doi.org/10.1038/s41598-023-34649-z https://doaj.org/article/88f1bd68f8414d65877680ebe13fb8c7 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023) |
op_relation |
https://doi.org/10.1038/s41598-023-34649-z https://doaj.org/toc/2045-2322 doi:10.1038/s41598-023-34649-z 2045-2322 https://doaj.org/article/88f1bd68f8414d65877680ebe13fb8c7 |
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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1768389905709268992 |