How long does it take to assemble the magmas that feed large basaltic fissure eruptions?
M Edmonds, ME Hartley, DJ Morgan… - AGU Fall Meeting …, 2016 - ui.adsabs.harvard.edu
Petrological constraints on timescales of pre-eruptive crystal storage and transport provide a
vital framework for interpretation of seismic, geodetic and gas monitoring data in regions
where large fissure eruptions occur. The AD 1783 Laki eruption, southeast Iceland, is one of
the best-documented small-scale analogues to a flood basalt eruption. Here we use Fe-Mg
interdiffusion in olivine and Mg diffusion in plagioclase to assess the timescales required to
assemble the Laki magma prior to eruption. Olivine macrocrysts in Laki magmatic tephra …
vital framework for interpretation of seismic, geodetic and gas monitoring data in regions
where large fissure eruptions occur. The AD 1783 Laki eruption, southeast Iceland, is one of
the best-documented small-scale analogues to a flood basalt eruption. Here we use Fe-Mg
interdiffusion in olivine and Mg diffusion in plagioclase to assess the timescales required to
assemble the Laki magma prior to eruption. Olivine macrocrysts in Laki magmatic tephra …
[引用][C] How long does it take to assemble the magmas that feed large basaltic fissure eruptions?
ME Hartley, DJ Morgan, J Maclennan, EJF Mutch… - 2016 AGU Fall …, 2016 - AGU
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