Additional file 1: of Biomarker records and mineral compositions of the Messinian halite and K–Mg salts from Sicily

Figure S1. The μ-XRF intensity maps of O, S, Na, Cl, Mg, Al, P, and Si, together with the picture of the measured area in K-1. Color scales indicate element concentrations in signal counts per second. Black crosses in the μ-XRF intensity map of S denote μ-XANES measurement points. Figure S2. The μ-XRF intensity maps of O, S, Na, Cl, Mg, Al, P, and Si, together with the picture of the measured area in K-3. Color scales indicate element concentrations in signal counts per second. Black crosses in the μ-XRF intensity map of S denote μ-XANES measurement points. Figure S3. The XRD spectra of spot 2-1, 2-2, and 2-3, together with the reference spectra of halite, kainite, and leonite. The presence of kainite peaks in spot 2-1 is probably due to contamination of kainite during the sampling by dental drill, because halites only occur as small crystals, making the sampling procedure difficult. Figure S4. (a) Thin section of K-2 under transmitted light. Area filled with resin is indicated as R. (b) Close-up of the red rectangle showing fluid inclusion bands in a halite crystal. (DOCX 4305 kb)