Fracture kinematics and Holocene stress field at the Krafla Rift, northern Iceland
In the Northern Volcanic Zone of Iceland, the geometry, kinematics and offset amount of the structures that form the active Krafla Rift were studied. This rift is composed of a central volcano and a swarm of extension fractures, normal faults and eruptive fissures, which were mapped and analysed thr...
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ftuninsubriairis:oai:irinsubria.uninsubria.it:11383/2120246 2024-04-14T08:13:33+00:00 Fracture kinematics and Holocene stress field at the Krafla Rift, northern Iceland Corti, N. Bonali, F. L. Pasquarè Mariotto, F. Tibaldi, A. Russo, E. Hjartardottir, A. R. Einarsson, P. Rigoni, V. Bressan, S. Corti, N. Bonali, F. L. Pasquarè Mariotto, F. Tibaldi, A. Russo, E. Hjartardottir, A. R. Einarsson, P. Rigoni, V. Bressan, S. 2021 ELETTRONICO https://hdl.handle.net/11383/2120246 https://doi.org/10.3390/geosciences11020101 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000622564300001 volume:11 issue:2 firstpage:1 lastpage:25 numberofpages:25 journal:GEOSCIENCES https://hdl.handle.net/11383/2120246 doi:10.3390/geosciences11020101 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85106069178 info:eu-repo/semantics/openAccess Extension fracture Iceland Krafla Rift Stresses info:eu-repo/semantics/article 2021 ftuninsubriairis https://doi.org/10.3390/geosciences11020101 2024-03-21T19:11:05Z In the Northern Volcanic Zone of Iceland, the geometry, kinematics and offset amount of the structures that form the active Krafla Rift were studied. This rift is composed of a central volcano and a swarm of extension fractures, normal faults and eruptive fissures, which were mapped and analysed through remote sensing and field techniques. In three areas, across the northern, central and southern part of the rift, detailed measurements were collected by extensive field surveys along the post-Late Glacial Maximum (LGM) extension fractures and normal faults, to reconstruct their strike, opening direction and dilation amount. The geometry and the distribution of all the studied structures suggest a northward propagation of the rift, and an interaction with the Húsavík–Flatey Fault. Although the opening direction at the extension fractures is mostly normal to the general N– S rift orientation (average value N99.5° E), a systematic occurrence of subordinate transcurrent com-ponents of motion is noticed. From the measured throw at each normal fault, the heave was calcu-lated, and it was summed together with the net dilation measured at the extension fractures; this has allowed us to assess the stretch ratio of the rift, obtaining a value of 1.003 in the central sector, and 1.001 and 1.002 in the northern and southern part, respectively. Article in Journal/Newspaper Iceland Flatey IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) Krafla ENVELOPE(-16.747,-16.747,65.713,65.713) Geosciences 11 2 101 |
institution |
Open Polar |
collection |
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) |
op_collection_id |
ftuninsubriairis |
language |
English |
topic |
Extension fracture Iceland Krafla Rift Stresses |
spellingShingle |
Extension fracture Iceland Krafla Rift Stresses Corti, N. Bonali, F. L. Pasquarè Mariotto, F. Tibaldi, A. Russo, E. Hjartardottir, A. R. Einarsson, P. Rigoni, V. Bressan, S. Fracture kinematics and Holocene stress field at the Krafla Rift, northern Iceland |
topic_facet |
Extension fracture Iceland Krafla Rift Stresses |
description |
In the Northern Volcanic Zone of Iceland, the geometry, kinematics and offset amount of the structures that form the active Krafla Rift were studied. This rift is composed of a central volcano and a swarm of extension fractures, normal faults and eruptive fissures, which were mapped and analysed through remote sensing and field techniques. In three areas, across the northern, central and southern part of the rift, detailed measurements were collected by extensive field surveys along the post-Late Glacial Maximum (LGM) extension fractures and normal faults, to reconstruct their strike, opening direction and dilation amount. The geometry and the distribution of all the studied structures suggest a northward propagation of the rift, and an interaction with the Húsavík–Flatey Fault. Although the opening direction at the extension fractures is mostly normal to the general N– S rift orientation (average value N99.5° E), a systematic occurrence of subordinate transcurrent com-ponents of motion is noticed. From the measured throw at each normal fault, the heave was calcu-lated, and it was summed together with the net dilation measured at the extension fractures; this has allowed us to assess the stretch ratio of the rift, obtaining a value of 1.003 in the central sector, and 1.001 and 1.002 in the northern and southern part, respectively. |
author2 |
Corti, N. Bonali, F. L. Pasquarè Mariotto, F. Tibaldi, A. Russo, E. Hjartardottir, A. R. Einarsson, P. Rigoni, V. Bressan, S. |
format |
Article in Journal/Newspaper |
author |
Corti, N. Bonali, F. L. Pasquarè Mariotto, F. Tibaldi, A. Russo, E. Hjartardottir, A. R. Einarsson, P. Rigoni, V. Bressan, S. |
author_facet |
Corti, N. Bonali, F. L. Pasquarè Mariotto, F. Tibaldi, A. Russo, E. Hjartardottir, A. R. Einarsson, P. Rigoni, V. Bressan, S. |
author_sort |
Corti, N. |
title |
Fracture kinematics and Holocene stress field at the Krafla Rift, northern Iceland |
title_short |
Fracture kinematics and Holocene stress field at the Krafla Rift, northern Iceland |
title_full |
Fracture kinematics and Holocene stress field at the Krafla Rift, northern Iceland |
title_fullStr |
Fracture kinematics and Holocene stress field at the Krafla Rift, northern Iceland |
title_full_unstemmed |
Fracture kinematics and Holocene stress field at the Krafla Rift, northern Iceland |
title_sort |
fracture kinematics and holocene stress field at the krafla rift, northern iceland |
publishDate |
2021 |
url |
https://hdl.handle.net/11383/2120246 https://doi.org/10.3390/geosciences11020101 |
long_lat |
ENVELOPE(-16.747,-16.747,65.713,65.713) |
geographic |
Krafla |
geographic_facet |
Krafla |
genre |
Iceland Flatey |
genre_facet |
Iceland Flatey |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000622564300001 volume:11 issue:2 firstpage:1 lastpage:25 numberofpages:25 journal:GEOSCIENCES https://hdl.handle.net/11383/2120246 doi:10.3390/geosciences11020101 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85106069178 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/geosciences11020101 |
container_title |
Geosciences |
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11 |
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2 |
container_start_page |
101 |
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