Fig. 4From: Biomarker records and mineral compositions of the Messinian halite and K–Mg salts from Sicilya–c Sulfur K-edge XANES spectra of the K–Mg salt slabs. Micro-XANES measurements were performed at the focused mode at each measurement point. Black crosses in the μ-XRF intensity map of S denote μ-XANES measurement points. The spectra for reference materials (blue lines) are from Yoshimura et al. (2013)Back to article page