Fig. 4: Nanoscale local variations in chemistry for AND100_MP808.
From: Nanoscale chemical heterogeneities control the viscosity of andesitic magmas
a STEM-HAADF image of the sample. The bright pixels represent the crystalline phase. b EDS elemental distribution map of Fe. c EDS elemental distribution map of Fe+Al showing a preferential distribution of Al around Fe-rich nanolites. d Magnification of A-A’ EDS-line-scan. e EDS line profile (A-A’) results, with SiO2, Al2O3 and FeOtot concentrations in wt%. Values on the x-axis represent the distance along the line profile (A-A’). Values on the y-axis represent the average composition of 7 neighboring pixels along the y-axis in d.
