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Pre-eruptive storage conditions of the Holocene dacite erupted from Kizimen Volcano, Kamchatka

International Geology Review

By:
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DOI: 10.1080/00206810903332413

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Abstract

This study describes an investigation of the pre-eruptive conditions (T, P and fO2) of dacite magma erupted during the KZI cycle (12,000-8400 years ago) of Kizimen Volcano, Kamchatka, the earliest, most voluminous and most explosive eruption cycle in the Kizimen record. Hydrothermal, water-saturated experiments on KZI dacite pumice coupled with titanomagnetite-ilmenite geothermometry calculations require that the KZI dacite existed at a temperature of 823 ?? 20??C and pressures of 125-150 MPa immediately prior to eruption. This estimate corresponds to a lithologic contact between Miocene volcaniclastic rocks and Pliocene-Pleistocene volcanic rocks located at a depth of 5-6 km beneath the Kizimen edifice, which may have facilitated the accumulation of atypically large volumes of gas-rich dacite during the KZI cycle.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Pre-eruptive storage conditions of the Holocene dacite erupted from Kizimen Volcano, Kamchatka
Series title:
International Geology Review
DOI:
10.1080/00206810903332413
Volume
52
Issue:
1
Year Published:
2010
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
International Geology Review
First page:
95
Last page:
110
Number of Pages:
16