Abstract: The late Miocene Cordillera Blanca Batholith lies directly over thick (50 km) crust, inboard of the older Cretaceous Coastal Batholith. Its peraluminous ‘S’ type mineralogy and its position ...

We present field, textural, major- and trace-element mineral chemical, and Sr–Nd whole-rock isotopic data on garnet-, cordierite-, and biotite-rich zones from the peraluminous South Mountain Batholith ...