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Calcic cores of plagioclase phenocrysts in andesite from Karymsky volcano: Evidence for rapid introduction by basaltic replenishment

Izbekov Pavel E., Eichelberger John C., Patino Lina C., Vogel Thomas A., Ivanov Boris V. (2002) Calcic cores of plagioclase phenocrysts in andesite from Karymsky volcano: Evidence for rapid introduction by basaltic replenishment // Geology. Vol. 30, No. 9. pp. 799-802.

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Abstract

Calcic cores in plagioclase of Karymsky andesite of the 1996–2000 eruptive cycle texturally and compositionally (both trace and major elements) mimic the plagioclase phenocrysts of basalt erupted 6 km away at the onset of the cycle. These observations support the view that simultaneous eruption of andesite and basalt at Karymsky in the beginning of the cycle represents an example of replenishment and eruption triggering of an andesitic reservoir. Homogeneity of andesitic output occurred within two months. This suggests to us that blending of injected basalt into reservoir magma was thorough and rapid.
Item Type: Article
Title: Calcic cores of plagioclase phenocrysts in andesite from Karymsky volcano: Evidence for rapid introduction by basaltic replenishment
Language: English
Journal or Publication Title: Geology
ISSN Print: 0091-7613
Uncontrolled Keywords: plagioclase, andesite, mixing, Kamchatka Peninsula
Subjects: 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 > Karymsky
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Depositing User: И.М. Романова
Date Deposited: 09 Apr 2014 01:59
Last Modified: 09 Apr 2014 02:00
URI: http://repo.kscnet.ru/id/eprint/1395

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