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Magma degassing during 7600 14C Kurile Lake caldera-forming eruption and its climatic impact

  • Geochemistry
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Abstract

The main goal of this investigation is estimating volume of volatile emission, atmospheric and climatic impact of the Kurile Lake caldera-forming eruption, one of the Earth’s largest Holocene explosive eruptions. The volatile content of magma before the eruption was estimated by comparing H2O, S, Cl and F contents in natural quenched glassy melt inclusions trapped by plagioclase phenocrysts. The volatile content of igneous rocks after eruption was estimated by comparing concentrations of degassed matrix glasses. As a result of KO-eruption not more than (3.7–4.2) × 1012 kg of water, (4.3–4.9) × 1010 kg of chlorine, (8.6–9.8) × 109 kg of fluorine and (2.6–2.9) × 1010 kg of sulphur were injected into the atmosphere. This eruption had to produce an important climatic impact.

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Authors and Affiliations

  1. Geological Department of Moscow State University, Moscow, Russia

    P. Yu. Plechov & A. L. Balashova

  2. Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky, Russia

    O. V. Dirksen

Authors
  1. P. Yu. Plechov
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  2. A. L. Balashova
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  3. O. V. Dirksen
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Plechov, P.Y., Balashova, A.L. & Dirksen, O.V. Magma degassing during 7600 14C Kurile Lake caldera-forming eruption and its climatic impact. Dokl. Earth Sc. 433, 974–977 (2010). https://doi.org/10.1134/S1028334X10070275

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  • DOI: https://doi.org/10.1134/S1028334X10070275

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