Analogue experiments on releasing and restraining bends and their application to the study of the Barents Shear Margin
The Barents Shear Margin separates the Svalbard and Barents Sea from the North Atlantic. During the break-up of the North Atlantic the plate tectonic configuration was characterized by sequential dextral shear, extension, and eventually contraction and inversion. This generated a complex zone of def...
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Copernicus Publications
2023
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00068606 2023-10-01T03:55:00+02:00 Analogue experiments on releasing and restraining bends and their application to the study of the Barents Shear Margin Gabrielsen, Roy Helge Giannenas, Panagiotis Athanasios Sokoutis, Dimitrios Willingshofer, Ernst Hassaan, Muhammad Faleide, Jan Inge 2023-08 electronic https://doi.org/10.5194/se-14-961-2023 https://noa.gwlb.de/receive/cop_mods_00068606 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067028/se-14-961-2023.pdf https://se.copernicus.org/articles/14/961/2023/se-14-961-2023.pdf eng eng Copernicus Publications Solid Earth -- 1869-9529 https://doi.org/10.5194/se-14-961-2023 https://noa.gwlb.de/receive/cop_mods_00068606 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067028/se-14-961-2023.pdf https://se.copernicus.org/articles/14/961/2023/se-14-961-2023.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/se-14-961-2023 2023-09-03T23:20:46Z The Barents Shear Margin separates the Svalbard and Barents Sea from the North Atlantic. During the break-up of the North Atlantic the plate tectonic configuration was characterized by sequential dextral shear, extension, and eventually contraction and inversion. This generated a complex zone of deformation that contains several structural families of overlapping and reactivated structures. A series of crustal-scale analogue experiments, utilizing a scaled and stratified sand–silicon polymer sequence, was used in the study of the structural evolution of the shear margin. The most significant observations for interpreting the structural configuration of the Barents Shear Margin are the following. Prominent early-stage positive structural elements (e.g. folds, push-ups) interacted with younger (e.g. inversion) structures and contributed to a hybrid final structural pattern. Several structural features that were initiated during the early (dextral shear) stage became overprinted and obliterated in the subsequent stages. All master faults, pull-apart basins, and extensional shear duplexes initiated during the shear stage quickly became linked in the extension stage, generating a connected basin system along the entire shear margin at the stage of maximum extension. The fold pattern was generated during the terminal stage (contraction–inversion became dominant in the basin areas) and was characterized by fold axes striking parallel to the basin margins. These folds, however, strongly affected the shallow intra-basin layers. The experiments reproduced the geometry and positions of the major basins and relations between structural elements (fault-and-fold systems) as observed along and adjacent to the Barents Shear Margin. This supports the present structural model for the shear margin. Article in Journal/Newspaper Barents Sea North Atlantic Svalbard Niedersächsisches Online-Archiv NOA Barents Sea Svalbard Solid Earth 14 9 961 983 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Gabrielsen, Roy Helge Giannenas, Panagiotis Athanasios Sokoutis, Dimitrios Willingshofer, Ernst Hassaan, Muhammad Faleide, Jan Inge Analogue experiments on releasing and restraining bends and their application to the study of the Barents Shear Margin |
topic_facet |
article Verlagsveröffentlichung |
description |
The Barents Shear Margin separates the Svalbard and Barents Sea from the North Atlantic. During the break-up of the North Atlantic the plate tectonic configuration was characterized by sequential dextral shear, extension, and eventually contraction and inversion. This generated a complex zone of deformation that contains several structural families of overlapping and reactivated structures. A series of crustal-scale analogue experiments, utilizing a scaled and stratified sand–silicon polymer sequence, was used in the study of the structural evolution of the shear margin. The most significant observations for interpreting the structural configuration of the Barents Shear Margin are the following. Prominent early-stage positive structural elements (e.g. folds, push-ups) interacted with younger (e.g. inversion) structures and contributed to a hybrid final structural pattern. Several structural features that were initiated during the early (dextral shear) stage became overprinted and obliterated in the subsequent stages. All master faults, pull-apart basins, and extensional shear duplexes initiated during the shear stage quickly became linked in the extension stage, generating a connected basin system along the entire shear margin at the stage of maximum extension. The fold pattern was generated during the terminal stage (contraction–inversion became dominant in the basin areas) and was characterized by fold axes striking parallel to the basin margins. These folds, however, strongly affected the shallow intra-basin layers. The experiments reproduced the geometry and positions of the major basins and relations between structural elements (fault-and-fold systems) as observed along and adjacent to the Barents Shear Margin. This supports the present structural model for the shear margin. |
format |
Article in Journal/Newspaper |
author |
Gabrielsen, Roy Helge Giannenas, Panagiotis Athanasios Sokoutis, Dimitrios Willingshofer, Ernst Hassaan, Muhammad Faleide, Jan Inge |
author_facet |
Gabrielsen, Roy Helge Giannenas, Panagiotis Athanasios Sokoutis, Dimitrios Willingshofer, Ernst Hassaan, Muhammad Faleide, Jan Inge |
author_sort |
Gabrielsen, Roy Helge |
title |
Analogue experiments on releasing and restraining bends and their application to the study of the Barents Shear Margin |
title_short |
Analogue experiments on releasing and restraining bends and their application to the study of the Barents Shear Margin |
title_full |
Analogue experiments on releasing and restraining bends and their application to the study of the Barents Shear Margin |
title_fullStr |
Analogue experiments on releasing and restraining bends and their application to the study of the Barents Shear Margin |
title_full_unstemmed |
Analogue experiments on releasing and restraining bends and their application to the study of the Barents Shear Margin |
title_sort |
analogue experiments on releasing and restraining bends and their application to the study of the barents shear margin |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/se-14-961-2023 https://noa.gwlb.de/receive/cop_mods_00068606 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067028/se-14-961-2023.pdf https://se.copernicus.org/articles/14/961/2023/se-14-961-2023.pdf |
geographic |
Barents Sea Svalbard |
geographic_facet |
Barents Sea Svalbard |
genre |
Barents Sea North Atlantic Svalbard |
genre_facet |
Barents Sea North Atlantic Svalbard |
op_relation |
Solid Earth -- 1869-9529 https://doi.org/10.5194/se-14-961-2023 https://noa.gwlb.de/receive/cop_mods_00068606 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067028/se-14-961-2023.pdf https://se.copernicus.org/articles/14/961/2023/se-14-961-2023.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/se-14-961-2023 |
container_title |
Solid Earth |
container_volume |
14 |
container_issue |
9 |
container_start_page |
961 |
op_container_end_page |
983 |
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1778523076609179648 |