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Figure 10 | Chemistry Central Journal

Figure 10

From: Rings or daggers, axes or fibulae have a different composition? A multivariate study on Central Italy bronzes from eneolithic to early iron age

Figure 10

PCA analysis, score plots of 129 objects, 7 elements. Colour markers reflect object grouping by the age criterion (author G.G). a PC1 vs PC2 scores; b PC1 vs PC3 scores, Cu rich objects are grouped in the bottom left corner; c PC2 vs PC3 scores with Cu rich objects in bottom right. Using the same scale as in Figure 11 the constriction of the point cloud becomes evident.

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