A New Approach for Provenance Studies of Archaeological Finds: Inferences from Trace Elements in Carbonate Minerals of Alpine White Marbles by a Bench-to-Top μ-XRF Spectrometer

Figure 3

PCA performed on (a) 3 variables (Mn, Fe, and Sr); (b) 4 variables (CaO, Mn, Fe, and Sr); (c) 5 variables (δ ¹⁸O, δ ¹³C, Mn, Fe, and Sr); (d) 5 variables (δ ¹⁸O, CaO, Mn, Fe, and Sr). Single scatter points refer to bottom and left scale (PC scores); element vectors refer to right and top scale (PC coefficients).

(a)

(b)

(c)

(d)