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...

Full description

Bibliographic Details
Published in:Journal of Volcanology and Geothermal Research
Main Authors: Ionov, Dmitri, Benard, A., Plechov, P. Yu., Shcherbakov, V. D.
Other Authors: 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
Language:English
Published: HAL CCSD 2013
Subjects:
Online Access:https://hal.science/hal-00941258
https://doi.org/10.1016/j.jvolgeores.2012.12.022
id ftinsu:oai:HAL:hal-00941258v1
record_format openpolar
spelling ftinsu:oai:HAL:hal-00941258v1 2023-06-18T03:41:30+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 ftinsu https://doi.org/10.1016/j.jvolgeores.2012.12.022 2023-06-05T18:50:18Z 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 Institut national des sciences de l'Univers: HAL-INSU Avacha ENVELOPE(158.503,158.503,53.040,53.040) Pacific Journal of Volcanology and Geothermal Research 263 122 131
institution Open Polar
collection Institut national des sciences de l'Univers: HAL-INSU
op_collection_id ftinsu
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
_version_ 1769007117541310464