Fig. 5From: K-feldspar rich shales from Jurassic bedded cherts in southeastern SloveniaK2O, TiO2, Cr and V versus Al2O3 diagram showing the close position to the post-Achaean Australian Shale (PAAS) values for shales, a silica dilution effect on the chert samples and a scatter from the trend for the K-feldspar-rich samples. Symbols same as for Fig. 4 Back to article page