Along-arc variations in lithospheric mantle compositions in Kamchatka, Russia: First trace element data on mantle xenoliths from the Klyuchevskoy Group volcanoes
International audience We provide results of a detailed study of the first peridotite xenoliths of proven mantle origin reported from Bezymyanny volcano in the Klyuchevskoy Group, northern Kamchatka arc. The xenoliths are coarse spinel harzburgites made up mainly of Mg-rich olivine as well as subhed...
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Online Access: | https://hal.science/hal-00941258 https://doi.org/10.1016/j.jvolgeores.2012.12.022 |
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ftunivnantes:oai:HAL:hal-00941258v1 2023-05-15T16:58:54+02:00 Along-arc variations in lithospheric mantle compositions in Kamchatka, Russia: First trace element data on mantle xenoliths from the Klyuchevskoy Group volcanoes Ionov, Dmitri Benard, A. Plechov, P. Yu. Shcherbakov, V. D. Géosciences Montpellier Université des Antilles et de la Guyane (UAG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) 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) Department of Geology Moscow Lomonosov Moscow State University (MSU) 2013-08-01 https://hal.science/hal-00941258 https://doi.org/10.1016/j.jvolgeores.2012.12.022 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jvolgeores.2012.12.022 hal-00941258 https://hal.science/hal-00941258 doi:10.1016/j.jvolgeores.2012.12.022 ISSN: 0377-0273 Journal of Volcanology and Geothermal Research https://hal.science/hal-00941258 Journal of Volcanology and Geothermal Research, 2013, 263, pp.122-131. ⟨10.1016/j.jvolgeores.2012.12.022⟩ Mantle xenolith Harzburgite Metasomatism Trace elements Subduction Island arc [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2013 ftunivnantes https://doi.org/10.1016/j.jvolgeores.2012.12.022 2023-02-14T23:57:49Z International audience We provide results of a detailed study of the first peridotite xenoliths of proven mantle origin reported from Bezymyanny volcano in the Klyuchevskoy Group, northern Kamchatka arc. The xenoliths are coarse spinel harzburgites made up mainly of Mg-rich olivine as well as subhedral orthopyroxene (opx) and Cr-rich spinel, and also contain fine-grained interstitial pyroxenes, amphibole and feldspar. The samples are unique in preserving the evidence for both initial arc mantle substrate produced by high-degree melt extraction and subsequent enrichment events. We show that the textures, modal and major oxide compositions of the Bezymyanny xenoliths are generally similar to those of spinel harzburgite xenoliths from Avacha volcano in southern Kamchatka. However, coarse opx from the Bezymyanny harzburgites has higher abundances of light and medium rare earth elements and other highly incompatible elements than coarse opx from the Avacha harzburgites. We infer that (1) the sub-arc lithospheric mantle beneath both Avacha and Bezymyanny (and possibly between these volcanoes) consists predominantly of harzburgitic melting residues, which experienced metasomatism by slab-related fluids or low-fraction, fluid-rich melts and (2) the degrees of metasomatism are higher beneath Bezymyanny. By contrast, xenolith suites from Shiveluch and Kharchinsky volcanoes 50-100 km north of the Klyuchevskoy Group include abundant cumulates and products of reaction of mantle rocks with silicate melts at high melt/rock ratios. The high melt flux through the lithospheric mantle beneath Shiveluch and Kharchinsky may be related to the asthenospheric flow around the northern edge of the sinking Pacific plate; lateral propagation of fluids in the mantle wedge south of the plate edge may contribute to metasomatism in the mantle lithosphere beneath the Klyuchevskoy Group volcanoes. Article in Journal/Newspaper Kamchatka Université de Nantes: HAL-UNIV-NANTES Avacha ENVELOPE(158.503,158.503,53.040,53.040) Pacific Journal of Volcanology and Geothermal Research 263 122 131 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Mantle xenolith Harzburgite Metasomatism Trace elements Subduction Island arc [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Mantle xenolith Harzburgite Metasomatism Trace elements Subduction Island arc [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes Ionov, Dmitri Benard, A. Plechov, P. Yu. Shcherbakov, V. D. Along-arc variations in lithospheric mantle compositions in Kamchatka, Russia: First trace element data on mantle xenoliths from the Klyuchevskoy Group volcanoes |
topic_facet |
Mantle xenolith Harzburgite Metasomatism Trace elements Subduction Island arc [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience We provide results of a detailed study of the first peridotite xenoliths of proven mantle origin reported from Bezymyanny volcano in the Klyuchevskoy Group, northern Kamchatka arc. The xenoliths are coarse spinel harzburgites made up mainly of Mg-rich olivine as well as subhedral orthopyroxene (opx) and Cr-rich spinel, and also contain fine-grained interstitial pyroxenes, amphibole and feldspar. The samples are unique in preserving the evidence for both initial arc mantle substrate produced by high-degree melt extraction and subsequent enrichment events. We show that the textures, modal and major oxide compositions of the Bezymyanny xenoliths are generally similar to those of spinel harzburgite xenoliths from Avacha volcano in southern Kamchatka. However, coarse opx from the Bezymyanny harzburgites has higher abundances of light and medium rare earth elements and other highly incompatible elements than coarse opx from the Avacha harzburgites. We infer that (1) the sub-arc lithospheric mantle beneath both Avacha and Bezymyanny (and possibly between these volcanoes) consists predominantly of harzburgitic melting residues, which experienced metasomatism by slab-related fluids or low-fraction, fluid-rich melts and (2) the degrees of metasomatism are higher beneath Bezymyanny. By contrast, xenolith suites from Shiveluch and Kharchinsky volcanoes 50-100 km north of the Klyuchevskoy Group include abundant cumulates and products of reaction of mantle rocks with silicate melts at high melt/rock ratios. The high melt flux through the lithospheric mantle beneath Shiveluch and Kharchinsky may be related to the asthenospheric flow around the northern edge of the sinking Pacific plate; lateral propagation of fluids in the mantle wedge south of the plate edge may contribute to metasomatism in the mantle lithosphere beneath the Klyuchevskoy Group volcanoes. |
author2 |
Géosciences Montpellier Université des Antilles et de la Guyane (UAG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) 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) Department of Geology Moscow Lomonosov Moscow State University (MSU) |
format |
Article in Journal/Newspaper |
author |
Ionov, Dmitri Benard, A. Plechov, P. Yu. Shcherbakov, V. D. |
author_facet |
Ionov, Dmitri Benard, A. Plechov, P. Yu. Shcherbakov, V. D. |
author_sort |
Ionov, Dmitri |
title |
Along-arc variations in lithospheric mantle compositions in Kamchatka, Russia: First trace element data on mantle xenoliths from the Klyuchevskoy Group volcanoes |
title_short |
Along-arc variations in lithospheric mantle compositions in Kamchatka, Russia: First trace element data on mantle xenoliths from the Klyuchevskoy Group volcanoes |
title_full |
Along-arc variations in lithospheric mantle compositions in Kamchatka, Russia: First trace element data on mantle xenoliths from the Klyuchevskoy Group volcanoes |
title_fullStr |
Along-arc variations in lithospheric mantle compositions in Kamchatka, Russia: First trace element data on mantle xenoliths from the Klyuchevskoy Group volcanoes |
title_full_unstemmed |
Along-arc variations in lithospheric mantle compositions in Kamchatka, Russia: First trace element data on mantle xenoliths from the Klyuchevskoy Group volcanoes |
title_sort |
along-arc variations in lithospheric mantle compositions in kamchatka, russia: first trace element data on mantle xenoliths from the klyuchevskoy group volcanoes |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-00941258 https://doi.org/10.1016/j.jvolgeores.2012.12.022 |
long_lat |
ENVELOPE(158.503,158.503,53.040,53.040) |
geographic |
Avacha Pacific |
geographic_facet |
Avacha Pacific |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
ISSN: 0377-0273 Journal of Volcanology and Geothermal Research https://hal.science/hal-00941258 Journal of Volcanology and Geothermal Research, 2013, 263, pp.122-131. ⟨10.1016/j.jvolgeores.2012.12.022⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jvolgeores.2012.12.022 hal-00941258 https://hal.science/hal-00941258 doi:10.1016/j.jvolgeores.2012.12.022 |
op_doi |
https://doi.org/10.1016/j.jvolgeores.2012.12.022 |
container_title |
Journal of Volcanology and Geothermal Research |
container_volume |
263 |
container_start_page |
122 |
op_container_end_page |
131 |
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1766051023829336064 |