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Mechanism of magma ascent and deep feeding channels of island arc volcanoes

Fedotov S.A. (1975) Mechanism of magma ascent and deep feeding channels of island arc volcanoes // Bulletin Volcanologique. Vol. 39. No. 2. pp. 241-254. doi: 10.1007/BF02597830.

Full text not available from this repository.

Official URL: http://link.springer.com/article/10.1007/BF0259783...

Abstract

The paper discusses the mechanism of deep magma activity beneath island are volcanoes and similar structures on the basis of data from geophysical investigations in Kamchatka; the analyses of forces that cause the ascent of magma; and related phenomena that are due to hydrostatic forces. It is shown that the ascent of magma through the astnenosphere occurs most likely in magma columns with a diameter of approximately 700–2,000 m and with a velocity of about 0.8–3 m/year. A regular line of such columns spaced in Kamchatka at a distance of about 30 km gives rise to a chain of separate Etrge volcanoes or volcanic centers. Ultrabasic magmas are most likely accumulated near the M discontinuity, whereas the apparent place of andesitic magma accumulation is in the earth’s crust near the boundary between the basement and sediments.
Item Type: Article
Title: Mechanism of magma ascent and deep feeding channels of island arc volcanoes
Language: English
Journal or Publication Title: Bulletin Volcanologique
ISSN Print: 0366-483X
ISSN Online: 1432-0819
Subjects: State scientific and technical information rubricator (ГРНТИ) > 38 ГЕОЛОГИЯ > 38.37 Петрография > 38.37.19 Магматизм и магматические горные породы
State scientific and technical information rubricator (ГРНТИ) > 38 ГЕОЛОГИЯ > 38.37 Петрография > 38.37.25 Вулканология
Volcanoes > 1 Volcanoes of the Kurile-Kamchatka Region > 1.1 Kamchatka > _ Volcanoes of Kamchatka
Depositing User: С.Э. Васильев
Date Deposited: 08 Oct 2014 03:09
Last Modified: 08 Oct 2014 03:09
URI: http://repo.kscnet.ru/id/eprint/1859

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