Evolution of a major segmented normal fault during multiphase rifting: The origin of plan-view zigzag geometry
This case study addresses fault reactivation and linkage between distinct extensional episodes with variable stretching direction. Using 2-D and 3-D seismic reflection data we demonstrate how the Vesterdjupet Fault Zone, one of the basin-bounding normal fault zones of the Lofoten margin (north Norway...
Published in: | Journal of Structural Geology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hdl.handle.net/1956/10291 https://doi.org/10.1016/j.jsg.2015.02.005 |
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ftunivbergen:oai:bora.uib.no:1956/10291 2023-05-15T17:08:12+02:00 Evolution of a major segmented normal fault during multiphase rifting: The origin of plan-view zigzag geometry Henstra, Gijs Rotevatn, Atle Gawthorpe, Steven L. Ravnås, Rodmar 2015-05 application/pdf https://hdl.handle.net/1956/10291 https://doi.org/10.1016/j.jsg.2015.02.005 eng eng Elsevier Tectonostratigraphic evolution of a multi-episodic rift. The northern Norway - Greenland rift: from post-orogenic exhumation to deep marine turbidites urn:issn:0191-8141 https://hdl.handle.net/1956/10291 https://doi.org/10.1016/j.jsg.2015.02.005 Copyright 2015 Elsevier Ltd. All rights reserved. Journal of Structural Geology 74 45-63 Normal fault Fault linkage Multiphase rift Reactivation Lofoten Vesterdjupet Peer reviewed Journal article 2015 ftunivbergen https://doi.org/10.1016/j.jsg.2015.02.005 2023-03-14T17:43:59Z This case study addresses fault reactivation and linkage between distinct extensional episodes with variable stretching direction. Using 2-D and 3-D seismic reflection data we demonstrate how the Vesterdjupet Fault Zone, one of the basin-bounding normal fault zones of the Lofoten margin (north Norway), evolved over c. 150 Myr as part of the North Atlantic rift. This fault zone is composed of NNE-SSW- and NE-SW-striking segments that exhibit a zigzag geometry. The structure formed during Late Jurassic and Early Cretaceous rifting from selective reactivation and linkage of Triassic faults. A rotation of the overall stress field has previously been invoked to have taken place between the Triassic and Jurassic rift episodes along the Lofoten margin. A comparison to recent physical analogue models of non-coaxial extension reveals that this suggested change in least principal stress for the Lofoten margin may best explain the zigzag-style linkage of the Triassic faults, although alternative models cannot be ruled out. This study underlines the prediction from physical models that the location and orientation of early phase normal faults can play a pivotal role in the evolution of subsequent faults systems in multi-rift systems. acceptedVersion Article in Journal/Newspaper Lofoten North Atlantic North Norway University of Bergen: Bergen Open Research Archive (BORA-UiB) Lofoten Norway Journal of Structural Geology 74 45 63 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
Normal fault Fault linkage Multiphase rift Reactivation Lofoten Vesterdjupet |
spellingShingle |
Normal fault Fault linkage Multiphase rift Reactivation Lofoten Vesterdjupet Henstra, Gijs Rotevatn, Atle Gawthorpe, Steven L. Ravnås, Rodmar Evolution of a major segmented normal fault during multiphase rifting: The origin of plan-view zigzag geometry |
topic_facet |
Normal fault Fault linkage Multiphase rift Reactivation Lofoten Vesterdjupet |
description |
This case study addresses fault reactivation and linkage between distinct extensional episodes with variable stretching direction. Using 2-D and 3-D seismic reflection data we demonstrate how the Vesterdjupet Fault Zone, one of the basin-bounding normal fault zones of the Lofoten margin (north Norway), evolved over c. 150 Myr as part of the North Atlantic rift. This fault zone is composed of NNE-SSW- and NE-SW-striking segments that exhibit a zigzag geometry. The structure formed during Late Jurassic and Early Cretaceous rifting from selective reactivation and linkage of Triassic faults. A rotation of the overall stress field has previously been invoked to have taken place between the Triassic and Jurassic rift episodes along the Lofoten margin. A comparison to recent physical analogue models of non-coaxial extension reveals that this suggested change in least principal stress for the Lofoten margin may best explain the zigzag-style linkage of the Triassic faults, although alternative models cannot be ruled out. This study underlines the prediction from physical models that the location and orientation of early phase normal faults can play a pivotal role in the evolution of subsequent faults systems in multi-rift systems. acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Henstra, Gijs Rotevatn, Atle Gawthorpe, Steven L. Ravnås, Rodmar |
author_facet |
Henstra, Gijs Rotevatn, Atle Gawthorpe, Steven L. Ravnås, Rodmar |
author_sort |
Henstra, Gijs |
title |
Evolution of a major segmented normal fault during multiphase rifting: The origin of plan-view zigzag geometry |
title_short |
Evolution of a major segmented normal fault during multiphase rifting: The origin of plan-view zigzag geometry |
title_full |
Evolution of a major segmented normal fault during multiphase rifting: The origin of plan-view zigzag geometry |
title_fullStr |
Evolution of a major segmented normal fault during multiphase rifting: The origin of plan-view zigzag geometry |
title_full_unstemmed |
Evolution of a major segmented normal fault during multiphase rifting: The origin of plan-view zigzag geometry |
title_sort |
evolution of a major segmented normal fault during multiphase rifting: the origin of plan-view zigzag geometry |
publisher |
Elsevier |
publishDate |
2015 |
url |
https://hdl.handle.net/1956/10291 https://doi.org/10.1016/j.jsg.2015.02.005 |
geographic |
Lofoten Norway |
geographic_facet |
Lofoten Norway |
genre |
Lofoten North Atlantic North Norway |
genre_facet |
Lofoten North Atlantic North Norway |
op_source |
Journal of Structural Geology 74 45-63 |
op_relation |
Tectonostratigraphic evolution of a multi-episodic rift. The northern Norway - Greenland rift: from post-orogenic exhumation to deep marine turbidites urn:issn:0191-8141 https://hdl.handle.net/1956/10291 https://doi.org/10.1016/j.jsg.2015.02.005 |
op_rights |
Copyright 2015 Elsevier Ltd. All rights reserved. |
op_doi |
https://doi.org/10.1016/j.jsg.2015.02.005 |
container_title |
Journal of Structural Geology |
container_volume |
74 |
container_start_page |
45 |
op_container_end_page |
63 |
_version_ |
1766063878155796480 |