Influence of tectonism on the composition of acid and basaltic lava
The Neovolcanic zones in Iceland are of threefold origin: the Mid-Atlantic rift-zone, the Snæfellsnes “leaky-transform fault”, and South-Iceland transgressive volcanic zone or propagating rift segment. Basalt compositions range from alkali basalts through transitional basalts to tholeiites along the...
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ftunivstetienne:oai:HAL:hal-00482056v1 2024-09-15T18:13:09+00:00 Influence of tectonism on the composition of acid and basaltic lava Sigmarsson, Olgeir Laboratoire Magmas et Volcans (LMV) Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) Institute of Earth Sciences University of Iceland Reykjavik Plouzané, France 2010-05-11 https://hal.univ-brest.fr/hal-00482056 https://hal.univ-brest.fr/hal-00482056/document https://hal.univ-brest.fr/hal-00482056/file/Sigmarsson_resume.pdf en eng HAL CCSD hal-00482056 https://hal.univ-brest.fr/hal-00482056 https://hal.univ-brest.fr/hal-00482056/document https://hal.univ-brest.fr/hal-00482056/file/Sigmarsson_resume.pdf info:eu-repo/semantics/OpenAccess Iceland in the Central Northern Atlantic : hotspot, sea currents and climate change https://hal.univ-brest.fr/hal-00482056 Iceland in the Central Northern Atlantic : hotspot, sea currents and climate change, May 2010, Plouzané, France [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/conferenceObject Conference papers 2010 ftunivstetienne 2024-07-09T00:05:34Z The Neovolcanic zones in Iceland are of threefold origin: the Mid-Atlantic rift-zone, the Snæfellsnes “leaky-transform fault”, and South-Iceland transgressive volcanic zone or propagating rift segment. Basalt compositions range from alkali basalts through transitional basalts to tholeiites along the off-rift zones towards the centre of Iceland. Diminishing proportion of garnet-pyroxenite melts towards the centre of the mantle plume is the preferred explanation. The origin of silicic magmas reflects their tectonic settings and appears to be controlled by the crustal geothermal gradient. Conference Object Iceland Université Jean Monnet – Saint-Etienne: HAL |
institution |
Open Polar |
collection |
Université Jean Monnet – Saint-Etienne: HAL |
op_collection_id |
ftunivstetienne |
language |
English |
topic |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes Sigmarsson, Olgeir Influence of tectonism on the composition of acid and basaltic lava |
topic_facet |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes |
description |
The Neovolcanic zones in Iceland are of threefold origin: the Mid-Atlantic rift-zone, the Snæfellsnes “leaky-transform fault”, and South-Iceland transgressive volcanic zone or propagating rift segment. Basalt compositions range from alkali basalts through transitional basalts to tholeiites along the off-rift zones towards the centre of Iceland. Diminishing proportion of garnet-pyroxenite melts towards the centre of the mantle plume is the preferred explanation. The origin of silicic magmas reflects their tectonic settings and appears to be controlled by the crustal geothermal gradient. |
author2 |
Laboratoire Magmas et Volcans (LMV) Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) Institute of Earth Sciences University of Iceland Reykjavik |
format |
Conference Object |
author |
Sigmarsson, Olgeir |
author_facet |
Sigmarsson, Olgeir |
author_sort |
Sigmarsson, Olgeir |
title |
Influence of tectonism on the composition of acid and basaltic lava |
title_short |
Influence of tectonism on the composition of acid and basaltic lava |
title_full |
Influence of tectonism on the composition of acid and basaltic lava |
title_fullStr |
Influence of tectonism on the composition of acid and basaltic lava |
title_full_unstemmed |
Influence of tectonism on the composition of acid and basaltic lava |
title_sort |
influence of tectonism on the composition of acid and basaltic lava |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.univ-brest.fr/hal-00482056 https://hal.univ-brest.fr/hal-00482056/document https://hal.univ-brest.fr/hal-00482056/file/Sigmarsson_resume.pdf |
op_coverage |
Plouzané, France |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Iceland in the Central Northern Atlantic : hotspot, sea currents and climate change https://hal.univ-brest.fr/hal-00482056 Iceland in the Central Northern Atlantic : hotspot, sea currents and climate change, May 2010, Plouzané, France |
op_relation |
hal-00482056 https://hal.univ-brest.fr/hal-00482056 https://hal.univ-brest.fr/hal-00482056/document https://hal.univ-brest.fr/hal-00482056/file/Sigmarsson_resume.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1810450711523098624 |