Strike-slip tectonics in the SW Barents Sea during North Atlantic rifting (Swaen Graben, Northern Norway)
This study uses high quality, three-dimensional [3-D] seismic data to investigate the occurrence of strike-slip faults in the Swaen Graben, SW Barents Sea. The Swaen Graben is divided into two principal sub-basins:- SSB1 and SSB2. The along-strike and along–dip displacement variations and scale rela...
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Language: | English |
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American Geophysical Union
2017
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Online Access: | https://orca.cardiff.ac.uk/id/eprint/105524/ https://doi.org/10.1002/2017TC004635 https://orca.cardiff.ac.uk/id/eprint/105524/1/Alves_Tectonics_2017_accepted.pdf |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:105524 2023-05-15T15:38:34+02:00 Strike-slip tectonics in the SW Barents Sea during North Atlantic rifting (Swaen Graben, Northern Norway) Omosanya, Kamaldeen Zervas, Ioannis Mattos, Nathalia Alves, Tiago Johansen, Stale Marfo, George 2017-11 application/pdf https://orca.cardiff.ac.uk/id/eprint/105524/ https://doi.org/10.1002/2017TC004635 https://orca.cardiff.ac.uk/id/eprint/105524/1/Alves_Tectonics_2017_accepted.pdf en eng American Geophysical Union https://orca.cardiff.ac.uk/id/eprint/105524/1/Alves_Tectonics_2017_accepted.pdf Omosanya, Kamaldeen, Zervas, Ioannis, Mattos, Nathalia https://orca.cardiff.ac.uk/view/cardiffauthors/A17469201.html, Alves, Tiago https://orca.cardiff.ac.uk/view/cardiffauthors/A106896T.html orcid:0000-0002-2765-3760 orcid:0000-0002-2765-3760, Johansen, Stale and Marfo, George 2017. Strike-slip tectonics in the SW Barents Sea during North Atlantic rifting (Swaen Graben, Northern Norway). Tectonics 36 (11) , pp. 2422-2446. 10.1002/2017TC004635 https://doi.org/10.1002/2017TC004635 file https://orca.cardiff.ac.uk/id/eprint/105524/1/Alves_Tectonics_2017_accepted.pdf doi:10.1002/2017TC004635 Article PeerReviewed 2017 ftunivcardiff https://doi.org/10.1002/2017TC004635 2022-11-03T23:43:25Z This study uses high quality, three-dimensional [3-D] seismic data to investigate the occurrence of strike-slip faults in the Swaen Graben, SW Barents Sea. The Swaen Graben is divided into two principal sub-basins:- SSB1 and SSB2. The along-strike and along–dip displacement variations and scale relationships are analyzed for forty-two [42] faults. The displacement profiles for these faults are complex in the Swaen Graben, showing clear evidence for polycyclic fault growth and marked syn-sedimentary activity. The observed variations in the displacement profiles indicate complex along-strike segmentation, linkage and mechanical interactions at distinct structural levels. Along-dip displacement minima indicate fault reactivation by dip-linkage. Importantly, geometric evidence for strike-slip faulting in the Swaen graben includes the presence of extensional horsetail splay faults, positive flower structures and minor transfer faults. This study shows that the faults in the Swaen Graben developed under extensional regimes during Late Jurassic to Early Cretaceous rifting and were reactivated by regional stresses during the Late Cretaceous. The two principal strike-slip faults in the Swaen Graben reveal sinistral movement and are linked at a shallow depth by minor transfer faults at a relay zone. Our work further demonstrates the occurrence of Late Mesozoic strike-slip movements in the SW Barents Sea, which were induced by regional tectonics, halokinesis and fault block rotation. Importantly, strike-slip faulting in the region extends perhaps into the Cenozoic interacting with extension during the North Atlantic rifting. Article in Journal/Newspaper Barents Sea North Atlantic Northern Norway Cardiff University: ORCA (Online Research @ Cardiff) Barents Sea Norway Tectonics 36 11 2422 2446 |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
description |
This study uses high quality, three-dimensional [3-D] seismic data to investigate the occurrence of strike-slip faults in the Swaen Graben, SW Barents Sea. The Swaen Graben is divided into two principal sub-basins:- SSB1 and SSB2. The along-strike and along–dip displacement variations and scale relationships are analyzed for forty-two [42] faults. The displacement profiles for these faults are complex in the Swaen Graben, showing clear evidence for polycyclic fault growth and marked syn-sedimentary activity. The observed variations in the displacement profiles indicate complex along-strike segmentation, linkage and mechanical interactions at distinct structural levels. Along-dip displacement minima indicate fault reactivation by dip-linkage. Importantly, geometric evidence for strike-slip faulting in the Swaen graben includes the presence of extensional horsetail splay faults, positive flower structures and minor transfer faults. This study shows that the faults in the Swaen Graben developed under extensional regimes during Late Jurassic to Early Cretaceous rifting and were reactivated by regional stresses during the Late Cretaceous. The two principal strike-slip faults in the Swaen Graben reveal sinistral movement and are linked at a shallow depth by minor transfer faults at a relay zone. Our work further demonstrates the occurrence of Late Mesozoic strike-slip movements in the SW Barents Sea, which were induced by regional tectonics, halokinesis and fault block rotation. Importantly, strike-slip faulting in the region extends perhaps into the Cenozoic interacting with extension during the North Atlantic rifting. |
format |
Article in Journal/Newspaper |
author |
Omosanya, Kamaldeen Zervas, Ioannis Mattos, Nathalia Alves, Tiago Johansen, Stale Marfo, George |
spellingShingle |
Omosanya, Kamaldeen Zervas, Ioannis Mattos, Nathalia Alves, Tiago Johansen, Stale Marfo, George Strike-slip tectonics in the SW Barents Sea during North Atlantic rifting (Swaen Graben, Northern Norway) |
author_facet |
Omosanya, Kamaldeen Zervas, Ioannis Mattos, Nathalia Alves, Tiago Johansen, Stale Marfo, George |
author_sort |
Omosanya, Kamaldeen |
title |
Strike-slip tectonics in the SW Barents Sea during North Atlantic rifting (Swaen Graben, Northern Norway) |
title_short |
Strike-slip tectonics in the SW Barents Sea during North Atlantic rifting (Swaen Graben, Northern Norway) |
title_full |
Strike-slip tectonics in the SW Barents Sea during North Atlantic rifting (Swaen Graben, Northern Norway) |
title_fullStr |
Strike-slip tectonics in the SW Barents Sea during North Atlantic rifting (Swaen Graben, Northern Norway) |
title_full_unstemmed |
Strike-slip tectonics in the SW Barents Sea during North Atlantic rifting (Swaen Graben, Northern Norway) |
title_sort |
strike-slip tectonics in the sw barents sea during north atlantic rifting (swaen graben, northern norway) |
publisher |
American Geophysical Union |
publishDate |
2017 |
url |
https://orca.cardiff.ac.uk/id/eprint/105524/ https://doi.org/10.1002/2017TC004635 https://orca.cardiff.ac.uk/id/eprint/105524/1/Alves_Tectonics_2017_accepted.pdf |
geographic |
Barents Sea Norway |
geographic_facet |
Barents Sea Norway |
genre |
Barents Sea North Atlantic Northern Norway |
genre_facet |
Barents Sea North Atlantic Northern Norway |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/105524/1/Alves_Tectonics_2017_accepted.pdf Omosanya, Kamaldeen, Zervas, Ioannis, Mattos, Nathalia https://orca.cardiff.ac.uk/view/cardiffauthors/A17469201.html, Alves, Tiago https://orca.cardiff.ac.uk/view/cardiffauthors/A106896T.html orcid:0000-0002-2765-3760 orcid:0000-0002-2765-3760, Johansen, Stale and Marfo, George 2017. Strike-slip tectonics in the SW Barents Sea during North Atlantic rifting (Swaen Graben, Northern Norway). Tectonics 36 (11) , pp. 2422-2446. 10.1002/2017TC004635 https://doi.org/10.1002/2017TC004635 file https://orca.cardiff.ac.uk/id/eprint/105524/1/Alves_Tectonics_2017_accepted.pdf doi:10.1002/2017TC004635 |
op_doi |
https://doi.org/10.1002/2017TC004635 |
container_title |
Tectonics |
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36 |
container_issue |
11 |
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2422 |
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2446 |
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1766369632559562752 |