Throw-rate variations within linkage zones during the growth of normal faults: case studies from the Western Volcanic Zone, Iceland.
This work investigates how throw-rates vary within fault bends and sites of fault linkage during the process of normal fault growth. In the Western Volcanic Zone, Iceland, through detailed field mapping and field measurements of fault throws, normal faults are mapped and along-strike throw profiles...
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ftbirkbeckcoll:oai:eprints.bbk.ac.uk.oai2:30487 2023-05-15T16:48:09+02:00 Throw-rate variations within linkage zones during the growth of normal faults: case studies from the Western Volcanic Zone, Iceland. Iezzi, Francesco Roberts, Gerald P. Faure Walker, J. 2020-04 text https://eprints.bbk.ac.uk/id/eprint/30487/ https://eprints.bbk.ac.uk/id/eprint/30487/1/Iezzi%20et%20al.%20Iceland%20Manuscript_Final.pdf https://doi.org/10.1016/j.jsg.2020.103976 en eng Elsevier https://eprints.bbk.ac.uk/id/eprint/30487/1/Iezzi%20et%20al.%20Iceland%20Manuscript_Final.pdf Iezzi, Francesco and Roberts, Gerald P. and Faure Walker, J. (2020) Throw-rate variations within linkage zones during the growth of normal faults: case studies from the Western Volcanic Zone, Iceland. Journal of Structural Geology 133 , p. 103976. ISSN 0191-8141. cc_by_nc_nd_4 CC-BY-NC-ND Earth and Planetary Sciences Article PeerReviewed 2020 ftbirkbeckcoll https://doi.org/10.1016/j.jsg.2020.103976 2022-01-09T09:06:29Z This work investigates how throw-rates vary within fault bends and sites of fault linkage during the process of normal fault growth. In the Western Volcanic Zone, Iceland, through detailed field mapping and field measurements of fault throws, normal faults are mapped and along-strike throw profiles are constructed in order to understand how the throw-rates relate with the local fault geometry along faults at different stages of linkage. The results show that throw-rates increase within linkage zones and propagating fault bends independently from the stage of maturity of the fault bend. This implies that 1) the relationship between the local fault geometry and the along-strike distribution of throw-rate is driven by the deeper part of the fault, where established fault bends start propagating to the surface; 2) faults grow first by linkage and coalescence of separate faults, and then by accumulation of slip on the resultant fault, in agreement with models of fault growth by linkage and coalescence; 3) incipient fault bends can produce uncertainty associated with palaeoseismological results, if fault bends remain unrecognised. Moreover, this work demonstrates that existing models showing increased co-seismic and throw-rates within fault bends and sites of fault linkage found in continental extensional settings are valid in a geodynamic context of a mid-oceanic rifts. Article in Journal/Newspaper Iceland BIROn - Birkbeck Institutional Research Online (Birkbeck University of London) Journal of Structural Geology 133 103976 |
institution |
Open Polar |
collection |
BIROn - Birkbeck Institutional Research Online (Birkbeck University of London) |
op_collection_id |
ftbirkbeckcoll |
language |
English |
topic |
Earth and Planetary Sciences |
spellingShingle |
Earth and Planetary Sciences Iezzi, Francesco Roberts, Gerald P. Faure Walker, J. Throw-rate variations within linkage zones during the growth of normal faults: case studies from the Western Volcanic Zone, Iceland. |
topic_facet |
Earth and Planetary Sciences |
description |
This work investigates how throw-rates vary within fault bends and sites of fault linkage during the process of normal fault growth. In the Western Volcanic Zone, Iceland, through detailed field mapping and field measurements of fault throws, normal faults are mapped and along-strike throw profiles are constructed in order to understand how the throw-rates relate with the local fault geometry along faults at different stages of linkage. The results show that throw-rates increase within linkage zones and propagating fault bends independently from the stage of maturity of the fault bend. This implies that 1) the relationship between the local fault geometry and the along-strike distribution of throw-rate is driven by the deeper part of the fault, where established fault bends start propagating to the surface; 2) faults grow first by linkage and coalescence of separate faults, and then by accumulation of slip on the resultant fault, in agreement with models of fault growth by linkage and coalescence; 3) incipient fault bends can produce uncertainty associated with palaeoseismological results, if fault bends remain unrecognised. Moreover, this work demonstrates that existing models showing increased co-seismic and throw-rates within fault bends and sites of fault linkage found in continental extensional settings are valid in a geodynamic context of a mid-oceanic rifts. |
format |
Article in Journal/Newspaper |
author |
Iezzi, Francesco Roberts, Gerald P. Faure Walker, J. |
author_facet |
Iezzi, Francesco Roberts, Gerald P. Faure Walker, J. |
author_sort |
Iezzi, Francesco |
title |
Throw-rate variations within linkage zones during the growth of normal faults: case studies from the Western Volcanic Zone, Iceland. |
title_short |
Throw-rate variations within linkage zones during the growth of normal faults: case studies from the Western Volcanic Zone, Iceland. |
title_full |
Throw-rate variations within linkage zones during the growth of normal faults: case studies from the Western Volcanic Zone, Iceland. |
title_fullStr |
Throw-rate variations within linkage zones during the growth of normal faults: case studies from the Western Volcanic Zone, Iceland. |
title_full_unstemmed |
Throw-rate variations within linkage zones during the growth of normal faults: case studies from the Western Volcanic Zone, Iceland. |
title_sort |
throw-rate variations within linkage zones during the growth of normal faults: case studies from the western volcanic zone, iceland. |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://eprints.bbk.ac.uk/id/eprint/30487/ https://eprints.bbk.ac.uk/id/eprint/30487/1/Iezzi%20et%20al.%20Iceland%20Manuscript_Final.pdf https://doi.org/10.1016/j.jsg.2020.103976 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
https://eprints.bbk.ac.uk/id/eprint/30487/1/Iezzi%20et%20al.%20Iceland%20Manuscript_Final.pdf Iezzi, Francesco and Roberts, Gerald P. and Faure Walker, J. (2020) Throw-rate variations within linkage zones during the growth of normal faults: case studies from the Western Volcanic Zone, Iceland. Journal of Structural Geology 133 , p. 103976. ISSN 0191-8141. |
op_rights |
cc_by_nc_nd_4 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.jsg.2020.103976 |
container_title |
Journal of Structural Geology |
container_volume |
133 |
container_start_page |
103976 |
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1766038266465746944 |