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 1

Location of the Sierra de las Cruces (SC) volcanic range (blue shaded box) at the central part of the Mexican Volcanic Belt (MVB) (modified from [30]). For guidance, the black box at the upper right side shows the location of this zone in North America. The figure also includes the approximate location of the Eastern Alkaline Province (EAP), Los Tuxtlas Volcanic Field (LTVF), Central American Volcanic Arc (CAVA), and the Chichón (Ch) and Tacaná (T) volcanoes. Other tectonic features are the Middle America Trench (MAT, shown by a thick black curve) and the East Pacific Rise (EPR, shown by a pair of dashed-dotted black lines). The traces marked by numbers 5 to 20 on the oceanic Cocos plate give the approximate age of the oceanic plate in Ma. Locations of Iztaccíhuatl (Iz), Popocatépetl (Po), and Nevado de Toluca (NT) are also shown. Cities are PV: Puerto Vallarta, MC: Mexico City, and V: Veracruz.