Timescales of magma mixing in the magma plumbing system of Bezymianny volcano: insights from diffusion chronometry
https://doi.org/10.33623/0579-9406-2018-4-52-58
Abstract
Zoned crystals record changes in magma evolution, such as injection of mafic magma into a shallow magma chamber, which often triggered to eruption of arc volcanoes. We applied diffusion chronometry for reverse zoned crystals of orthopyroxene from 6 eruptions of Bezymianny volcano during 2006–2012 years and showed correlation between time of injection of new magma and recorded seismicity. We descripted two type of Bezymianny volcano eruptions, which driven by different trigger mechanisms: 1) orthopyroxene rims formed during up to 3 years previous to eruption; 2) orthopyroxene rims formed during 0–2 months previous to eruption.
About the Authors
V. O. Davydova
Московский государственный университет имени М.В. Ломоносова
Russian Federation
Russian Federation
V. D. Shcherbakov
Московский государственный университет имени М.В. Ломоносова
Russian Federation
Russian Federation
P. Yu. Plechov
Московский государственный университет имени М.В. Ломоносова; Минералогический музей имени А.Е. Ферсмана РАН
Russian Federation
Russian Federation
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Review
For citations:
Davydova V.O., Shcherbakov V.D., Plechov P.Yu. Timescales of magma mixing in the magma plumbing system of Bezymianny volcano: insights from diffusion chronometry. Moscow University Bulletin. Series 4. Geology. 2018;(4):52-58. (In Russ.) https://doi.org/10.33623/0579-9406-2018-4-52-58
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