Fig. 8

Maps of posterior probabilities of GEOLOGY model representing areal distribution of posterior (post hoc) probabilities computed for: a siliciclastic rocks (group 1) and b carbonate rocks (group 3). Increasing influence of soil geochemical signatures developed on siliciclastic (a) and carbonate rocks (b) displayed by the 75–100 percentile range (orange-red); increasing influence of other rock types (combined posterior probabilities of groups 2, 4 and 5) displayed by the 0–25 percentile range (green–blue). Zone of the mixing influences (yellow) displayed by the 25–75 percentile range