Tracking timescales of short-term precursors to large basaltic fissure eruptions through Fe-Mg diffusion in olivine
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- 作者：Margaret E. Hartleya ; b ; margaret.hartley@manchester.ac.uk" class="auth_mail" title="E-mail the corresponding author ; Daniel J. Morganc ; John Maclennanb ; Marie Edmondsb ; Thor Thordarsond
- 关键词：olivine ; diffusion ; crystal mush ; CO2 outgassing ; Laki ; Iceland
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：1 April 2016
- 年：2016
- 卷：439
- 期：Complete
- 页码：58-70
- 全文大小：2297 K
文摘
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Fe–Mg diffusion in olivine is used to characterise timescales of crystal storage and transport.
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Olivines were entrained into their carrier liquid 6–10 days prior to the Laki eruption.
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Diffusion timescales are comparable to historical records of pre-eruptive seismicity.
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CO2 fluxes in the 6–10 days preceding eruption were 2–6 Mt/d.
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CO2 flux monitoring may enhance accuracy of eruption forecasting in Iceland.