Analogue experiments on releasing and restraining bends and their application to the study of the Barents Shear Margin
International audience 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 generate...
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2023
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Online Access: | https://hal.science/hal-04283986 https://hal.science/hal-04283986/document https://hal.science/hal-04283986/file/se-14-961-2023.pdf https://doi.org/10.5194/se-14-961-2023 |
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Institut national des sciences de l'Univers: HAL-INSU |
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language |
English |
topic |
Arctic Ocean Barents Sea Crustals Inversion structures North Atlantic Polymer sequences Silicon polymers Structural configurations Structural elements Structural evolution Svalbard deformation experimental study fault plate tectonics polymer structural geology [SDU]Sciences of the Universe [physics] |
spellingShingle |
Arctic Ocean Barents Sea Crustals Inversion structures North Atlantic Polymer sequences Silicon polymers Structural configurations Structural elements Structural evolution Svalbard deformation experimental study fault plate tectonics polymer structural geology [SDU]Sciences of the Universe [physics] 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 |
Arctic Ocean Barents Sea Crustals Inversion structures North Atlantic Polymer sequences Silicon polymers Structural configurations Structural elements Structural evolution Svalbard deformation experimental study fault plate tectonics polymer structural geology [SDU]Sciences of the Universe [physics] |
description |
International audience 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. © Copyright: |
author2 |
University of Oslo (UiO) Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Universiteit Utrecht / Utrecht University Utrecht Norges Forskningsråd, (228107, 295208) |
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 |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04283986 https://hal.science/hal-04283986/document https://hal.science/hal-04283986/file/se-14-961-2023.pdf https://doi.org/10.5194/se-14-961-2023 |
geographic |
Arctic Arctic Ocean Svalbard Barents Sea |
geographic_facet |
Arctic Arctic Ocean Svalbard Barents Sea |
genre |
Arctic Arctic Ocean Barents Sea North Atlantic Svalbard |
genre_facet |
Arctic Arctic Ocean Barents Sea North Atlantic Svalbard |
op_source |
ISSN: 1869-9510 EISSN: 1869-9529 Solid Earth https://hal.science/hal-04283986 Solid Earth, 2023, 14 (9), pp.961-983. ⟨10.5194/se-14-961-2023⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/se-14-961-2023 hal-04283986 https://hal.science/hal-04283986 https://hal.science/hal-04283986/document https://hal.science/hal-04283986/file/se-14-961-2023.pdf doi:10.5194/se-14-961-2023 |
op_rights |
http://creativecommons.org/licenses/by/ 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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1790597501535911936 |
spelling |
ftinsu:oai:HAL:hal-04283986v1 2024-02-11T10:01:42+01:00 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 University of Oslo (UiO) Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Universiteit Utrecht / Utrecht University Utrecht Norges Forskningsråd, (228107, 295208) 2023 https://hal.science/hal-04283986 https://hal.science/hal-04283986/document https://hal.science/hal-04283986/file/se-14-961-2023.pdf https://doi.org/10.5194/se-14-961-2023 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/se-14-961-2023 hal-04283986 https://hal.science/hal-04283986 https://hal.science/hal-04283986/document https://hal.science/hal-04283986/file/se-14-961-2023.pdf doi:10.5194/se-14-961-2023 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1869-9510 EISSN: 1869-9529 Solid Earth https://hal.science/hal-04283986 Solid Earth, 2023, 14 (9), pp.961-983. ⟨10.5194/se-14-961-2023⟩ Arctic Ocean Barents Sea Crustals Inversion structures North Atlantic Polymer sequences Silicon polymers Structural configurations Structural elements Structural evolution Svalbard deformation experimental study fault plate tectonics polymer structural geology [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2023 ftinsu https://doi.org/10.5194/se-14-961-2023 2024-01-24T17:25:40Z International audience 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. © Copyright: Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea North Atlantic Svalbard Institut national des sciences de l'Univers: HAL-INSU Arctic Arctic Ocean Svalbard Barents Sea Solid Earth 14 9 961 983 |