Generel stress afspænding forklarer europæiske paleocæne bassininversioner
Udgivelsesdato: 12 05 2005 During Late Cretaceous and Cenozoic times many Paleozoic and Mesozoic rifts and basin structures in the interior of the European continent underwent several phases of inversion. The main phases occurred during the Late Cretaceous and Middle Paleocene, and have been explain...
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ftuniaarhuspubl:oai:pure.atira.dk:publications/7bcbec30-2a90-11da-bee9-02004c4f4f50 2023-05-15T16:50:18+02:00 Generel stress afspænding forklarer europæiske paleocæne bassininversioner Plate-wide stress relaxation explains European Palaeocene basin inversions Nielsen, S.B. Thomsen, Erik Hansen, D.L. Clausen, Ole Rønø 2005 https://pure.au.dk/portal/da/publications/platewide-stress-relaxation-explains-european-palaeocene-basin-inversions(7bcbec30-2a90-11da-bee9-02004c4f4f50).html eng eng info:eu-repo/semantics/restrictedAccess Nielsen , S B , Thomsen , E , Hansen , D L & Clausen , O R 2005 , ' Plate-wide stress relaxation explains European Palaeocene basin inversions ' , Nature , vol. 435 , pp. 195-198 . intra-plate deformation flexure in-plane stress lithosphere inversion article 2005 ftuniaarhuspubl 2020-07-18T20:27:11Z Udgivelsesdato: 12 05 2005 During Late Cretaceous and Cenozoic times many Paleozoic and Mesozoic rifts and basin structures in the interior of the European continent underwent several phases of inversion. The main phases occurred during the Late Cretaceous and Middle Paleocene, and have been explained by pulses of compression, mainly from the Alpine orogen. Here we show that the main phases differed both in structural style and cause. The Cretaceous phase was characterized by narrow uplift zones, reverse activation of faults, crustal shortening, and the formation of asymmetric marginal troughs. In contrast, the Middle Paleocene phase was characterized by domal uplift of a wider area with only mild fault movements, and formation of more distal and shallow marginal troughs. A simple flexural model explains how domal, secondary inversion follows inevitably from primary, convergence related inversion upon relaxation of the in-plane tectonic stress. The onset of relaxation inversions was plate-wide and simultaneous, and may have been triggered by stress changes caused by elevation of the North Atlantic lithosphere by the Iceland plume or the drop in NS convergence rate between Africa and Europe. Article in Journal/Newspaper Iceland North Atlantic Aarhus University: Research |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
intra-plate deformation flexure in-plane stress lithosphere inversion |
spellingShingle |
intra-plate deformation flexure in-plane stress lithosphere inversion Nielsen, S.B. Thomsen, Erik Hansen, D.L. Clausen, Ole Rønø Generel stress afspænding forklarer europæiske paleocæne bassininversioner |
topic_facet |
intra-plate deformation flexure in-plane stress lithosphere inversion |
description |
Udgivelsesdato: 12 05 2005 During Late Cretaceous and Cenozoic times many Paleozoic and Mesozoic rifts and basin structures in the interior of the European continent underwent several phases of inversion. The main phases occurred during the Late Cretaceous and Middle Paleocene, and have been explained by pulses of compression, mainly from the Alpine orogen. Here we show that the main phases differed both in structural style and cause. The Cretaceous phase was characterized by narrow uplift zones, reverse activation of faults, crustal shortening, and the formation of asymmetric marginal troughs. In contrast, the Middle Paleocene phase was characterized by domal uplift of a wider area with only mild fault movements, and formation of more distal and shallow marginal troughs. A simple flexural model explains how domal, secondary inversion follows inevitably from primary, convergence related inversion upon relaxation of the in-plane tectonic stress. The onset of relaxation inversions was plate-wide and simultaneous, and may have been triggered by stress changes caused by elevation of the North Atlantic lithosphere by the Iceland plume or the drop in NS convergence rate between Africa and Europe. |
format |
Article in Journal/Newspaper |
author |
Nielsen, S.B. Thomsen, Erik Hansen, D.L. Clausen, Ole Rønø |
author_facet |
Nielsen, S.B. Thomsen, Erik Hansen, D.L. Clausen, Ole Rønø |
author_sort |
Nielsen, S.B. |
title |
Generel stress afspænding forklarer europæiske paleocæne bassininversioner |
title_short |
Generel stress afspænding forklarer europæiske paleocæne bassininversioner |
title_full |
Generel stress afspænding forklarer europæiske paleocæne bassininversioner |
title_fullStr |
Generel stress afspænding forklarer europæiske paleocæne bassininversioner |
title_full_unstemmed |
Generel stress afspænding forklarer europæiske paleocæne bassininversioner |
title_sort |
generel stress afspænding forklarer europæiske paleocæne bassininversioner |
publishDate |
2005 |
url |
https://pure.au.dk/portal/da/publications/platewide-stress-relaxation-explains-european-palaeocene-basin-inversions(7bcbec30-2a90-11da-bee9-02004c4f4f50).html |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_source |
Nielsen , S B , Thomsen , E , Hansen , D L & Clausen , O R 2005 , ' Plate-wide stress relaxation explains European Palaeocene basin inversions ' , Nature , vol. 435 , pp. 195-198 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766040476077522944 |