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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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 |
_version_ |
1766050092306923520 |