Pre-eruptive storage conditions of the Holocene dacite erupted from Kizimen Volcano, Kamchatka
International Geology Review
By: B. Browne, P. Izbekov, J. Eichelberger, and T. Churikova
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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.
| 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 |
| Google Analytic Metrics | Metrics page |