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Magmatic studies

EPMA, scales of magmatic processes
Estimating the time scales of magmatic processes

In Earth sciences, Electron Probe Microanalysis (EPMA) is used to quantify chemical interdiffusion profiles in silicate glasses and minerals and to estimate the time scales of magmatic processes. Sodium X-ray map of a synthetic sample showing mixing and chemical interdiffusion between a Mg-, Fe-, and Ca-rich silicate melt on the left (blue to dark green) and a Al-, Na-rich silicate melt on the right (green to orange). The dark blue grains are relict feldspars (anorthite) from the starting material. 

Recorded on CAMECA SXFive-TACTIS EPMA at Laboratoire Magmas et Volcans, Université Clermont Auvergne/CNRS/IRD, OPGC, France.
Image courtesy of J.L. Devidal.

Winning image for the month of July 2020