Holocene displacement field at an emerged oceanic transform-ridge junction: The Husavik-Flatey Fault - Gudfinnugja Fault system, North Iceland
Our research focuses on Holocene tectonics in a broad area surrounding the junction between the active NW-SE trending Husavik-Flatey transform fault (HFF) and the N-S Gudfinnugja normal fault (GF), an exceptional example of onshore transform-ridge intersection. We mapped 637 minor and major faults,...
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Online Access: | http://hdl.handle.net/11383/2023019 https://doi.org/10.1016/j.jsg.2015.03.011 http://www.sciencedirect.com/science/journal/01918141 |
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ftuninsubriairis:oai:irinsubria.uninsubria.it:11383/2023019 2024-04-14T08:13:38+00:00 Holocene displacement field at an emerged oceanic transform-ridge junction: The Husavik-Flatey Fault - Gudfinnugja Fault system, North Iceland PASQUARE' MARIOTTO, FEDERICO ALIGI Bonali, F. L. Tibaldi, A. Rust, D. Oppizzi, P. Cavallo, A. PASQUARE' MARIOTTO, FEDERICO ALIGI Bonali, F. L. Tibaldi, A. Rust, D. Oppizzi, P. Cavallo, A. 2015 ELETTRONICO http://hdl.handle.net/11383/2023019 https://doi.org/10.1016/j.jsg.2015.03.011 http://www.sciencedirect.com/science/journal/01918141 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000355351200009 volume:75 firstpage:118 lastpage:134 numberofpages:17 journal:JOURNAL OF STRUCTURAL GEOLOGY http://hdl.handle.net/11383/2023019 doi:10.1016/j.jsg.2015.03.011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84927701269 http://www.sciencedirect.com/science/journal/01918141 Fissure Gudfinnugja fault Husavik-Flatey fault Iceland Normal fault Transform fault info:eu-repo/semantics/article 2015 ftuninsubriairis https://doi.org/10.1016/j.jsg.2015.03.011 2024-03-21T19:00:18Z Our research focuses on Holocene tectonics in a broad area surrounding the junction between the active NW-SE trending Husavik-Flatey transform fault (HFF) and the N-S Gudfinnugja normal fault (GF), an exceptional example of onshore transform-ridge intersection. We mapped 637 minor and major faults, and measured the dip-slip and strike-slip offset components on the major faults. We also mapped 1016 individual tension fractures, as well as opening directions on the most reliable ones. The results indicate that this portion of the HFF comprises major right-stepping segments, with both normal and right-lateral strike-slip components, linked by local normal faults. The entire GF always shows pure dip-slip normal displacements, with a strong decrease in offset at the junction with the HFF. Fissure opening directions are in the range N45°-65°E along the HFF, N90°E along the GF, and N110°E within the area south of the HFF and west of the GF. Fault kinematics and fissure openings suggest a displacement field in good agreement with most of present-day GPS measurements, although our data indicate the possible long-term Holocene effects of the superimposition of magma-related stresses on the regional tectonic stresses. The HFF and the GF work together as a structural system able to accommodate differential crustal block motion, and possibly past dyke intrusions. Article in Journal/Newspaper Iceland Flatey IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) Husavik ENVELOPE(-17.345,-17.345,66.046,66.046) Journal of Structural Geology 75 118 134 |
institution |
Open Polar |
collection |
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) |
op_collection_id |
ftuninsubriairis |
language |
English |
topic |
Fissure Gudfinnugja fault Husavik-Flatey fault Iceland Normal fault Transform fault |
spellingShingle |
Fissure Gudfinnugja fault Husavik-Flatey fault Iceland Normal fault Transform fault PASQUARE' MARIOTTO, FEDERICO ALIGI Bonali, F. L. Tibaldi, A. Rust, D. Oppizzi, P. Cavallo, A. Holocene displacement field at an emerged oceanic transform-ridge junction: The Husavik-Flatey Fault - Gudfinnugja Fault system, North Iceland |
topic_facet |
Fissure Gudfinnugja fault Husavik-Flatey fault Iceland Normal fault Transform fault |
description |
Our research focuses on Holocene tectonics in a broad area surrounding the junction between the active NW-SE trending Husavik-Flatey transform fault (HFF) and the N-S Gudfinnugja normal fault (GF), an exceptional example of onshore transform-ridge intersection. We mapped 637 minor and major faults, and measured the dip-slip and strike-slip offset components on the major faults. We also mapped 1016 individual tension fractures, as well as opening directions on the most reliable ones. The results indicate that this portion of the HFF comprises major right-stepping segments, with both normal and right-lateral strike-slip components, linked by local normal faults. The entire GF always shows pure dip-slip normal displacements, with a strong decrease in offset at the junction with the HFF. Fissure opening directions are in the range N45°-65°E along the HFF, N90°E along the GF, and N110°E within the area south of the HFF and west of the GF. Fault kinematics and fissure openings suggest a displacement field in good agreement with most of present-day GPS measurements, although our data indicate the possible long-term Holocene effects of the superimposition of magma-related stresses on the regional tectonic stresses. The HFF and the GF work together as a structural system able to accommodate differential crustal block motion, and possibly past dyke intrusions. |
author2 |
PASQUARE' MARIOTTO, FEDERICO ALIGI Bonali, F. L. Tibaldi, A. Rust, D. Oppizzi, P. Cavallo, A. |
format |
Article in Journal/Newspaper |
author |
PASQUARE' MARIOTTO, FEDERICO ALIGI Bonali, F. L. Tibaldi, A. Rust, D. Oppizzi, P. Cavallo, A. |
author_facet |
PASQUARE' MARIOTTO, FEDERICO ALIGI Bonali, F. L. Tibaldi, A. Rust, D. Oppizzi, P. Cavallo, A. |
author_sort |
PASQUARE' MARIOTTO, FEDERICO ALIGI |
title |
Holocene displacement field at an emerged oceanic transform-ridge junction: The Husavik-Flatey Fault - Gudfinnugja Fault system, North Iceland |
title_short |
Holocene displacement field at an emerged oceanic transform-ridge junction: The Husavik-Flatey Fault - Gudfinnugja Fault system, North Iceland |
title_full |
Holocene displacement field at an emerged oceanic transform-ridge junction: The Husavik-Flatey Fault - Gudfinnugja Fault system, North Iceland |
title_fullStr |
Holocene displacement field at an emerged oceanic transform-ridge junction: The Husavik-Flatey Fault - Gudfinnugja Fault system, North Iceland |
title_full_unstemmed |
Holocene displacement field at an emerged oceanic transform-ridge junction: The Husavik-Flatey Fault - Gudfinnugja Fault system, North Iceland |
title_sort |
holocene displacement field at an emerged oceanic transform-ridge junction: the husavik-flatey fault - gudfinnugja fault system, north iceland |
publishDate |
2015 |
url |
http://hdl.handle.net/11383/2023019 https://doi.org/10.1016/j.jsg.2015.03.011 http://www.sciencedirect.com/science/journal/01918141 |
long_lat |
ENVELOPE(-17.345,-17.345,66.046,66.046) |
geographic |
Husavik |
geographic_facet |
Husavik |
genre |
Iceland Flatey |
genre_facet |
Iceland Flatey |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000355351200009 volume:75 firstpage:118 lastpage:134 numberofpages:17 journal:JOURNAL OF STRUCTURAL GEOLOGY http://hdl.handle.net/11383/2023019 doi:10.1016/j.jsg.2015.03.011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84927701269 http://www.sciencedirect.com/science/journal/01918141 |
op_doi |
https://doi.org/10.1016/j.jsg.2015.03.011 |
container_title |
Journal of Structural Geology |
container_volume |
75 |
container_start_page |
118 |
op_container_end_page |
134 |
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1796311648987774976 |