MOESM4 of Volcanic ash in bare ice south of Sør Rondane Mountains, Antarctica: geochemistry, rock magnetism and nondestructive magnetic detection with SQUID gradiometer
Additional file 4. Backscattered Electron Images (BEIs; each image area is a square, 500Â Âľm each side) of volcanic ash particles extracted from tephra-bearing ice block samples with analyzed points (red numbers with arrows) for major element concentrations with EPMA.