Kugaenko Yulia, Volynets Anna O. (2018) Magmatic plumbing systems of the monogenetic volcanic fields: A case study of Tolbachinsky Dol, Kamchatka // Journal of Volcanology and Geothermal Research. doi: 10.1016/j.jvolgeores.2018.03.015.
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Официальный URL: http://doi.org/10.1016/j.jvolgeores.2018.03.015
Аннотация
Clusters of small-volume volcanoes that individually may be defined as monogenetic, but have interlinked and
interconnected plumbing systems, are used to be categorized as monogenetic volcanic fields (MVF).We argue
that such volcanic clusters should be distinguished as separate type of volcanism, intermediate between monogenetic and polygenetic. The magma plumbing system structure of the MVF (its complexity and polymagmatic
character) is the key argument for the potential separation of themin a classification. To avoid confusion caused by geneticmeaning of the used words we suggest using a term “areal volcanism” or “areal volcanic fields” (AVF instead of MVF) as defining this special type of volcanic activity. Herewe provide a reviewof themain characteristic features of one of the largest Holocene AVF, which is active now – the Tolbachik field of cinder cones in the southern part of Klyuchevskaya volcano group (Kamchatka), known in the literature as Tolbachinsky Dol. This paper is focused on the research of magma plumbing system. We consider structural,morphological, geological, geochemical and petrological data on the erupted basalts and their genesis. Specially planned seismic experiments made in 2010–2015 (seismic tomography and microseismic sounding) allowedmodeling of the principal elements of the magma plumbing system of Tolbachik AVF. Analysis of the investigations made in this area shows that Tolbachik AVF has a complex, dynamic, variable magmatic feeding system, which can be visualized as a superposition of subvertical and sublateral magma conduits. The contrast composition of the erupted rocks is caused by their different, although genetically connected, magma sources and mixing processes. One of the long-lived eruptive centers of Tolbachik AVF is Plosky Tolbachik stratovolcano, which lost its independent activity and was captured by Tolbachik AVF in Holocene. The AVF formed rejuvenated volcanism using the feeding system of the stratovolcano like an “old anthill”. The magma plumbing system characteristics of Tolbachinsky Dol strongly support the idea of separation of AVF from monogenetic volcanism type in the classification.
Тип объекта: | Статья |
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Название: | Magmatic plumbing systems of the monogenetic volcanic fields: A case study of Tolbachinsky Dol, Kamchatka |
Язык: | English |
Издание: | Journal of Volcanology and Geothermal Research |
ISSN Print: | 03770273 |
Тематика: | 3 ГРНТИ - Государственный рубрикатор научно-технической информации > 38 ГЕОЛОГИЯ > 38.19 Геолого-геофизические исследования глубинного строения Земли > 38.19.19 Строение земной коры и верхней мантии по геофизическим данным 3 ГРНТИ - Государственный рубрикатор научно-технической информации > 38 ГЕОЛОГИЯ > 38.37 Петрография > 38.37.25 Вулканология 1 Вулканы > 1.1 Вулканы Курило-Камчатского региона > 1.1.1 Камчатка > _ Вулканы Камчатки 1 Вулканы > 1.1 Вулканы Курило-Камчатского региона > 1.1.1 Камчатка > Плоский Толбачик 1 Вулканы > 1.3 Вулканы мира > _ Вулканы мира |
Разместивший пользователь: | И.М. Романова |
Дата размещения: | 02 Апр 2018 02:59 |
Последнее изменение: | 09 Фев 2022 01:20 |
URI: | http://repo.kscnet.ru/id/eprint/3226 |
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