How the differential load induced by normal fault scarps controls the distribution of monogenic volcanism
Understanding shallow magma transfer and the related vent distribution is crucial for volcanic hazard. Here we investigate how the stress induced by topographic scarps linked to normal faults affects the distribution of monogenic volcanoes at divergent plate boundaries. Our numerical models of dyke...
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Online Access: | http://hdl.handle.net/11585/775962 https://doi.org/10.1002/2015GL065638 https://agupubs.onlinelibrary.wiley.com/doi/10.1002/2015GL065638 |
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ftunibolognairis:oai:cris.unibo.it:11585/775962 2024-02-04T10:01:30+01:00 How the differential load induced by normal fault scarps controls the distribution of monogenic volcanism Maccaferri, F. Acocella, V. Rivalta, E. Maccaferri, F. Acocella, V. Rivalta, E. 2015 ELETTRONICO http://hdl.handle.net/11585/775962 https://doi.org/10.1002/2015GL065638 https://agupubs.onlinelibrary.wiley.com/doi/10.1002/2015GL065638 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000363412400035 volume:42 issue:18 firstpage:7507 lastpage:7512 numberofpages:6 journal:GEOPHYSICAL RESEARCH LETTERS info:eu-repo/grantAgreement/EC/FP7/240583 http://hdl.handle.net/11585/775962 doi:10.1002/2015GL065638 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84945236937 https://agupubs.onlinelibrary.wiley.com/doi/10.1002/2015GL065638 info:eu-repo/semantics/openAccess monogenic volcanism fault scarp dyke propagation unloading info:eu-repo/semantics/article 2015 ftunibolognairis https://doi.org/10.1002/2015GL065638 2024-01-10T17:51:47Z Understanding shallow magma transfer and the related vent distribution is crucial for volcanic hazard. Here we investigate how the stress induced by topographic scarps linked to normal faults affects the distribution of monogenic volcanoes at divergent plate boundaries. Our numerical models of dyke propagation below a fault scarp show that the dykes tend to propagate toward and erupt on the footwall side. This effect, increasing with the scarp height, is stronger for dykes propagating underneath the hanging wall side and decreases with the distance from the scarp. A comparison to the East African Rift System, Afar and Iceland shows that (1) the inner rift structure, which shapes the topography, controls shallow dyke propagation; (2) differential loading due to mass redistribution affects magma propagation over a broad scale range (100–105 m). Our results find application to any volcanic field with tectonics‐ or erosion‐induced topographic variations and should be considered in any volcanic hazard assessment. Article in Journal/Newspaper Iceland IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) Geophysical Research Letters 42 18 7507 7512 |
institution |
Open Polar |
collection |
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
op_collection_id |
ftunibolognairis |
language |
English |
topic |
monogenic volcanism fault scarp dyke propagation unloading |
spellingShingle |
monogenic volcanism fault scarp dyke propagation unloading Maccaferri, F. Acocella, V. Rivalta, E. How the differential load induced by normal fault scarps controls the distribution of monogenic volcanism |
topic_facet |
monogenic volcanism fault scarp dyke propagation unloading |
description |
Understanding shallow magma transfer and the related vent distribution is crucial for volcanic hazard. Here we investigate how the stress induced by topographic scarps linked to normal faults affects the distribution of monogenic volcanoes at divergent plate boundaries. Our numerical models of dyke propagation below a fault scarp show that the dykes tend to propagate toward and erupt on the footwall side. This effect, increasing with the scarp height, is stronger for dykes propagating underneath the hanging wall side and decreases with the distance from the scarp. A comparison to the East African Rift System, Afar and Iceland shows that (1) the inner rift structure, which shapes the topography, controls shallow dyke propagation; (2) differential loading due to mass redistribution affects magma propagation over a broad scale range (100–105 m). Our results find application to any volcanic field with tectonics‐ or erosion‐induced topographic variations and should be considered in any volcanic hazard assessment. |
author2 |
Maccaferri, F. Acocella, V. Rivalta, E. |
format |
Article in Journal/Newspaper |
author |
Maccaferri, F. Acocella, V. Rivalta, E. |
author_facet |
Maccaferri, F. Acocella, V. Rivalta, E. |
author_sort |
Maccaferri, F. |
title |
How the differential load induced by normal fault scarps controls the distribution of monogenic volcanism |
title_short |
How the differential load induced by normal fault scarps controls the distribution of monogenic volcanism |
title_full |
How the differential load induced by normal fault scarps controls the distribution of monogenic volcanism |
title_fullStr |
How the differential load induced by normal fault scarps controls the distribution of monogenic volcanism |
title_full_unstemmed |
How the differential load induced by normal fault scarps controls the distribution of monogenic volcanism |
title_sort |
how the differential load induced by normal fault scarps controls the distribution of monogenic volcanism |
publishDate |
2015 |
url |
http://hdl.handle.net/11585/775962 https://doi.org/10.1002/2015GL065638 https://agupubs.onlinelibrary.wiley.com/doi/10.1002/2015GL065638 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000363412400035 volume:42 issue:18 firstpage:7507 lastpage:7512 numberofpages:6 journal:GEOPHYSICAL RESEARCH LETTERS info:eu-repo/grantAgreement/EC/FP7/240583 http://hdl.handle.net/11585/775962 doi:10.1002/2015GL065638 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84945236937 https://agupubs.onlinelibrary.wiley.com/doi/10.1002/2015GL065638 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2015GL065638 |
container_title |
Geophysical Research Letters |
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42 |
container_issue |
18 |
container_start_page |
7507 |
op_container_end_page |
7512 |
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1789967435386847232 |