Mafic Late Miocene–Quaternary volcanic rocks in the Kamchatka back arc region: implications for subduction geometry and slab history at the Pacific–Aleutian junction

New 40Ar/39Ar and published 14C ages constrain voluminous mafic volcanism of the Kamchatka back-arc to Miocene (3–6 Ma) and Late Pleistocene to Holocene (<1 Ma) times. Trace elements and isotopic compositions show that older rocks derived from a depleted mantle through subduction fluid-flux melti...

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Published in:Contributions to Mineralogy and Petrology
Main Authors: Volynets, Anna, Churikova, Tatiana, Wörner, Gerhard, Gordeychik, Boris, Layer, Paul
Format: Article in Journal/Newspaper
Language:unknown
Published: Springer-Verlag 2009
Subjects:
Kamchatka
Back-arc
Plateau-basalts
Subduction
Trace elements
Isotopes
550
Earth Sciences
Mineralogy
Mineral Resources
Geology
Pacific
Online Access:http://resolver.sub.uni-goettingen.de/purl?goescholar/4176
https://doi.org/10.1007/s00410-009-0447-9
id ftsubgoettingen:oai:goescholar:1/4176
record_format openpolar
spelling ftsubgoettingen:oai:goescholar:1/4176 2023-05-15T16:58:16+02:00 Mafic Late Miocene–Quaternary volcanic rocks in the Kamchatka back arc region: implications for subduction geometry and slab history at the Pacific–Aleutian junction Volynets, Anna Churikova, Tatiana Wörner, Gerhard Gordeychik, Boris Layer, Paul 2009 application/pdf http://resolver.sub.uni-goettingen.de/purl?goescholar/4176 https://doi.org/10.1007/s00410-009-0447-9 unknown Springer-Verlag 0010-7999 1432-0967 Volynets, Anna; Churikova, Tatiana; Wörner, Gerhard; Gordeychik, Boris; Layer, Paul (2009): Mafic Late Miocene–Quaternary volcanic rocks in the Kamchatka back arc region: implications for subduction geometry and slab history at the Pacific–Aleutian junction - Contributions to Mineralogy and Petrology; Vol. 159, Nr. 5, p. 659-687. Springer-Verlag http://resolver.sub.uni-goettingen.de/purl?goescholar/4176 Contributions to Mineralogy and Petrology; Vol. 159, Nr. 5, p. 659-687 doi:10.1007/s00410-009-0447-9 openAccess http://goedoc.uni-goettingen.de/goescholar/License_Goedoc_2009_03.txt Kamchatka Back-arc Plateau-basalts Subduction Trace elements Isotopes 550 Earth Sciences Mineralogy Mineral Resources Geology journalArticle publishedVersion 2009 ftsubgoettingen https://doi.org/10.1007/s00410-009-0447-9 2022-11-02T09:27:27Z New 40Ar/39Ar and published 14C ages constrain voluminous mafic volcanism of the Kamchatka back-arc to Miocene (3–6 Ma) and Late Pleistocene to Holocene (<1 Ma) times. Trace elements and isotopic compositions show that older rocks derived from a depleted mantle through subduction fluid-flux melting (>20%). Younger rocks form in a back arc by lower melting degrees involving enriched mantle components. The arc front and Central Kamchatka Depression are also underlain by plateau lavas and shield volcanoes of Late Pleistocene age. The focus of these voluminous eruptions thus migrated in time and may be the result of a high fluid flux in a setting where the Emperor seamount subducts and the slab steepens during rollback during terrain accretions. The northern termination of Holocene volcanism locates the edge of the subducting Pacific plate below Kamchatka, a “slab-edge-effect” is not observed in the back arc region. peerReviewed Article in Journal/Newspaper Kamchatka Georg-August-Universität Göttingen: GoeScholar Pacific Contributions to Mineralogy and Petrology 159 5 659 687
institution Open Polar
collection Georg-August-Universität Göttingen: GoeScholar
op_collection_id ftsubgoettingen
language unknown
topic Kamchatka
Back-arc
Plateau-basalts
Subduction
Trace elements
Isotopes
550
Earth Sciences
Mineralogy
Mineral Resources
Geology
spellingShingle Kamchatka
Back-arc
Plateau-basalts
Subduction
Trace elements
Isotopes
550
Earth Sciences
Mineralogy
Mineral Resources
Geology
Volynets, Anna
Churikova, Tatiana
Wörner, Gerhard
Gordeychik, Boris
Layer, Paul
Mafic Late Miocene–Quaternary volcanic rocks in the Kamchatka back arc region: implications for subduction geometry and slab history at the Pacific–Aleutian junction
topic_facet Kamchatka
Back-arc
Plateau-basalts
Subduction
Trace elements
Isotopes
550
Earth Sciences
Mineralogy
Mineral Resources
Geology
description New 40Ar/39Ar and published 14C ages constrain voluminous mafic volcanism of the Kamchatka back-arc to Miocene (3–6 Ma) and Late Pleistocene to Holocene (<1 Ma) times. Trace elements and isotopic compositions show that older rocks derived from a depleted mantle through subduction fluid-flux melting (>20%). Younger rocks form in a back arc by lower melting degrees involving enriched mantle components. The arc front and Central Kamchatka Depression are also underlain by plateau lavas and shield volcanoes of Late Pleistocene age. The focus of these voluminous eruptions thus migrated in time and may be the result of a high fluid flux in a setting where the Emperor seamount subducts and the slab steepens during rollback during terrain accretions. The northern termination of Holocene volcanism locates the edge of the subducting Pacific plate below Kamchatka, a “slab-edge-effect” is not observed in the back arc region. peerReviewed
format Article in Journal/Newspaper
author Volynets, Anna
Churikova, Tatiana
Wörner, Gerhard
Gordeychik, Boris
Layer, Paul
author_facet Volynets, Anna
Churikova, Tatiana
Wörner, Gerhard
Gordeychik, Boris
Layer, Paul
author_sort Volynets, Anna
title Mafic Late Miocene–Quaternary volcanic rocks in the Kamchatka back arc region: implications for subduction geometry and slab history at the Pacific–Aleutian junction
title_short Mafic Late Miocene–Quaternary volcanic rocks in the Kamchatka back arc region: implications for subduction geometry and slab history at the Pacific–Aleutian junction
title_full Mafic Late Miocene–Quaternary volcanic rocks in the Kamchatka back arc region: implications for subduction geometry and slab history at the Pacific–Aleutian junction
title_fullStr Mafic Late Miocene–Quaternary volcanic rocks in the Kamchatka back arc region: implications for subduction geometry and slab history at the Pacific–Aleutian junction
title_full_unstemmed Mafic Late Miocene–Quaternary volcanic rocks in the Kamchatka back arc region: implications for subduction geometry and slab history at the Pacific–Aleutian junction
title_sort mafic late miocene–quaternary volcanic rocks in the kamchatka back arc region: implications for subduction geometry and slab history at the pacific–aleutian junction
publisher Springer-Verlag
publishDate 2009
url http://resolver.sub.uni-goettingen.de/purl?goescholar/4176
https://doi.org/10.1007/s00410-009-0447-9
geographic Pacific
geographic_facet Pacific
genre Kamchatka
genre_facet Kamchatka
op_relation 0010-7999
1432-0967
Volynets, Anna; Churikova, Tatiana; Wörner, Gerhard; Gordeychik, Boris; Layer, Paul (2009): Mafic Late Miocene–Quaternary volcanic rocks in the Kamchatka back arc region: implications for subduction geometry and slab history at the Pacific–Aleutian junction - Contributions to Mineralogy and Petrology; Vol. 159, Nr. 5, p. 659-687. Springer-Verlag
http://resolver.sub.uni-goettingen.de/purl?goescholar/4176
Contributions to Mineralogy and Petrology; Vol. 159, Nr. 5, p. 659-687
doi:10.1007/s00410-009-0447-9
op_rights openAccess
http://goedoc.uni-goettingen.de/goescholar/License_Goedoc_2009_03.txt
op_doi https://doi.org/10.1007/s00410-009-0447-9
container_title Contributions to Mineralogy and Petrology
container_volume 159
container_issue 5
container_start_page 659
op_container_end_page 687
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