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Testing of the Titanomagnetite Method to Detect Magmatic Chamber Depth at Avachinsky Stratovolcano and Tolbachik Fissure Eruption

Zubov A.G., Ananyev V.V. (2014) Testing of the Titanomagnetite Method to Detect Magmatic Chamber Depth at Avachinsky Stratovolcano and Tolbachik Fissure Eruption // 10th International Conference “PROBLEMS OF GEOCOSMOS”. Book of Abstracts. St. Petersburg, Petrodvorets, October 6-10, 2014. St. Peterburg: Физфак СПбГУ. pp. 81.

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Official URL: http://geo.phys.spbu.ru/geocosmos/

Abstract

Two volcanoes were tested using the titanomagnetite method in order to detect the magma chamber depth. Curie temperature of andesite tephra shows that the magmatic chamber was situated on the depth of 18±7 km under Avachinsky Volcano ~5 Ka ago, but one of the basalt-andesite tephra from Avachinsky results the chamber depth of 32±6 km ~3 Ka ago. This method applied to the lava from Tolbachik Fissure Eruption (TFE) shows a chamber depth of 47±5 km. This result is inconsistent slightly with the depth of 35±6 km obtained by our microzond analysing of element composition of titanomagnetite grains into lava sample from earlier phase of the same eruption. This two different results between TFE lava samples may occur from magma differentiation or this is a methodical or occasional error. To know true it needs a sample statistics. At present, more microzond data from Tolbachik Fissure Eruption are being analyzed.
Item Type: Article conference proceedings
Title: Testing of the Titanomagnetite Method to Detect Magmatic Chamber Depth at Avachinsky Stratovolcano and Tolbachik Fissure Eruption
Title (translation): Опробование титаномагнетитового метода по определению глубины магматического очага на Авачинском стратовулкане и на Толбачинском трещинном извержении
Language: English
Journal or Publication Title: 10th International Conference “PROBLEMS OF GEOCOSMOS”. Book of Abstracts. St. Petersburg, Petrodvorets, October 6-10, 2014
ISBN: 978-5-98340-334-5
Uncontrolled Keywords: volcanism, petromagnetism, titanomagnetite, magmatic chamber, Tolbachik Fissure Eruption, Avachinsky stratovolcano
Subjects: State scientific and technical information rubricator (ГРНТИ) > 38 ГЕОЛОГИЯ > 38.19 Геолого-геофизические исследования глубинного строения Земли > 38.19.19 Строение земной коры и верхней мантии по геофизическим данным
State scientific and technical information rubricator (ГРНТИ) > 38 ГЕОЛОГИЯ > 38.35 Минералогия > 38.35.15 Физика минералов
State scientific and technical information rubricator (ГРНТИ) > 38 ГЕОЛОГИЯ > 38.37 Петрография > 38.37.15 Физические свойства горных пород
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 > Avachinsky
Volcanoes > 1 Volcanoes of the Kurile-Kamchatka Region > 1.1 Kamchatka > Plosky Tolbachik
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Depositing User: Александр Зубов
Date Deposited: 10 Nov 2014 08:18
Last Modified: 10 Nov 2014 08:18
URI: http://repo.kscnet.ru/id/eprint/1953

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