Geological Magazine; January 2008; v. 145; no. 1;
p. 1-15; DOI: 10.1017/S0016756807003949
© Cambridge University Press (CUP)
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Figure 5. (a) Plot of aluminium saturation index (ASI) ratio v. SiO2 for the analysed rocks, on a volatile-free basis. (b) Plot of Shands index (ANK: molar Al2O3/(Na2O+K2O) v. A/CNK: molar Al2O3/(CaO+Na2O+K2O)) for the analysed dyke rocks and the granodiorite stock (on a volatile-free basis).
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