气候变化领域集成服务门户(CCPortal): Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography

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DOI	10.1029/2020JB020097
	Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography
	Koulakov I.; Shapiro N.M.; Sens-Schönfelder C.; Luehr B.G.; Gordeev E.I.; Jakovlev A.; Abkadyrov I.; Chebrov D.V.; Bushenkova N.; Droznina S.Y.; Senyukov S.L.; Novgorodova A.; Stupina T.
发表日期	2020
ISSN	21699313
卷号	125 期号:10
英文摘要	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. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Central Kamchatka Depression; Kizimen; Klyuchevskoy Group of Volcanoes; seismic tomography; Shiveluch; subduction
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187565
作者单位	Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS, Novosibirsk, Russian Federation; Geology-Geophysical Department, Novosibirsk State University, Novosibirsk, Russian Federation; Institute of Volcanology and Seismology, FEB RAS, Petropavlovsk-Kamchatsky, Russian Federation; Institut des Sciences de la Terre (ISTERRE), UMR CNRS 5375, Université Grenoble-Alpes, Grenoble, France; Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russian Federation; GFZ German Research Centre for Geosciences, Potsdam, Germany; Kamchatkan Branch of Geophysical Survey, RAS, Petropavlovsk-Kamchatsky, Russian Federation
推荐引用方式 GB/T 7714	Koulakov I.,Shapiro N.M.,Sens-Schönfelder C.,et al. Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography[J],2020,125(10).
APA	Koulakov I..,Shapiro N.M..,Sens-Schönfelder C..,Luehr B.G..,Gordeev E.I..,...&Stupina T..(2020).Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography.Journal of Geophysical Research: Solid Earth,125(10).
MLA	Koulakov I.,et al."Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography".Journal of Geophysical Research: Solid Earth 125.10(2020).