Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography
Klyuchevskoy and surrounding volcanoes in central Kamchatka form the Northern Group of Volcanoes (NGV), which is an area of particularly diverse and intensive Pleistocene‐Holocene volcanism. In this study, we present a new seismic tomographic model of the crust and uppermost mantle beneath NGV based...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5003812 2023-05-15T16:58:14+02:00 Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography Koulakov, I. Shapiro, N. Sens-Schönfelder, C. Lühr, B. Gordeev, E. Jakovlev, A. Abkadyrov, I. Chebrov, D. Bushenkova, N. Droznina, S. Senyukov, S. Novgorodova, A. Stupina, T. 2020 application/pdf https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003812 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003812_2/component/file_5004357/5003812.pdf unknown info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JB020097 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003812 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003812_2/component/file_5004357/5003812.pdf info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND Journal of Geophysical Research: Solid Earth info:eu-repo/semantics/article 2020 ftgfzpotsdam https://doi.org/10.1029/2020JB020097 2022-09-14T05:57:40Z Klyuchevskoy and surrounding volcanoes in central Kamchatka form the Northern Group of Volcanoes (NGV), which is an area of particularly diverse and intensive Pleistocene‐Holocene volcanism. In this study, we present a new seismic tomographic model of the crust and uppermost mantle beneath NGV based on local earthquake data recorded by several permanent and temporary seismic networks including a large‐scale experiment that was conducted in 2015–2016 by an international scientific consortium. Having an unprecedented resolution for this part of Kamchatka, the new model reveals many features associated with the present and past volcanic activity within the NGV. In the upper crust, we found several prominent high‐velocity anomalies interpreted as traces of large basaltic shield volcanoes, which were hidden by more recent volcanic structures and sediments. We interpret the mantle structure to reflect asthenospheric flow up through a slab window below the Kamchatka‐Aleutian junction that feeds the entire NGV. The interaction of the hot asthenospheric material with fluids released from the slab determines the particular volcanic activity within the NGV. We argue that the eastern branch of the Central Kamchatka Depression, which is associated with a prominent low‐velocity anomaly in the uppermost mantle, was formed as a recent rift zone separating the NGV from the Kamchatka Eastern Ranges. Article in Journal/Newspaper Kamchatka GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Journal of Geophysical Research: Solid Earth 125 10 |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
unknown |
description |
Klyuchevskoy and surrounding volcanoes in central Kamchatka form the Northern Group of Volcanoes (NGV), which is an area of particularly diverse and intensive Pleistocene‐Holocene volcanism. In this study, we present a new seismic tomographic model of the crust and uppermost mantle beneath NGV based on local earthquake data recorded by several permanent and temporary seismic networks including a large‐scale experiment that was conducted in 2015–2016 by an international scientific consortium. Having an unprecedented resolution for this part of Kamchatka, the new model reveals many features associated with the present and past volcanic activity within the NGV. In the upper crust, we found several prominent high‐velocity anomalies interpreted as traces of large basaltic shield volcanoes, which were hidden by more recent volcanic structures and sediments. We interpret the mantle structure to reflect asthenospheric flow up through a slab window below the Kamchatka‐Aleutian junction that feeds the entire NGV. The interaction of the hot asthenospheric material with fluids released from the slab determines the particular volcanic activity within the NGV. We argue that the eastern branch of the Central Kamchatka Depression, which is associated with a prominent low‐velocity anomaly in the uppermost mantle, was formed as a recent rift zone separating the NGV from the Kamchatka Eastern Ranges. |
format |
Article in Journal/Newspaper |
author |
Koulakov, I. Shapiro, N. Sens-Schönfelder, C. Lühr, B. Gordeev, E. Jakovlev, A. Abkadyrov, I. Chebrov, D. Bushenkova, N. Droznina, S. Senyukov, S. Novgorodova, A. Stupina, T. |
spellingShingle |
Koulakov, I. Shapiro, N. Sens-Schönfelder, C. Lühr, B. Gordeev, E. Jakovlev, A. Abkadyrov, I. Chebrov, D. Bushenkova, N. Droznina, S. Senyukov, S. Novgorodova, A. Stupina, T. Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography |
author_facet |
Koulakov, I. Shapiro, N. Sens-Schönfelder, C. Lühr, B. Gordeev, E. Jakovlev, A. Abkadyrov, I. Chebrov, D. Bushenkova, N. Droznina, S. Senyukov, S. Novgorodova, A. Stupina, T. |
author_sort |
Koulakov, I. |
title |
Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography |
title_short |
Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography |
title_full |
Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography |
title_fullStr |
Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography |
title_full_unstemmed |
Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography |
title_sort |
mantle and crustal sources of magmatic activity of klyuchevskoy and surrounding volcanoes in kamchatka inferred from earthquake tomography |
publishDate |
2020 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003812 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003812_2/component/file_5004357/5003812.pdf |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Journal of Geophysical Research: Solid Earth |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JB020097 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003812 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003812_2/component/file_5004357/5003812.pdf |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1029/2020JB020097 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
125 |
container_issue |
10 |
_version_ |
1766050061628735488 |