Multivariate Analysis, Mass Balance Techniques, and Statistical Tests as Tools in Igneous Petrology: Application to the Sierra de las Cruces Volcanic Range (Mexican Volcanic Belt)
Figure 11
Major element Harker-type diagrams for volcanic rocks from the Sierra de las Cruces northern sector. An ordinary least-squares (OLS) regression model is included in each diagram (OLS equation; is number of samples; is Pearson regression coefficient; solid line is OLS model; discontinuous lines are 95% confidence regression bands). Abbreviations for end-members in mixing/mingling models: (a) Sierra de las Cruces: : intermediate and : felsic; (b) Iztaccíhuatl volcano [31]: : mafic and : felsic; (c) Popocatépetl volcano [32]: : mafic and : felsic.
