Fig. 9From: The Val Biandino Intrusive Suite (central Southern Alps, N Italy): new geochronological and geochemical data on the Early Permian magmatic activity in the Southalpine Domaina SiO2 vs. K2O wt% diagrams displaying the high-K calc-alkaline affinity of the VBQD and VSBG rocks; b alkali-silica classification diagram that shows the positive correlation between silica and alkali and also the gaps existing in the distribution of the SiO2 content in the rocks of the VBQDBack to article page