Thermal metamorphism and assimilation of schists by a dioritic magma, Ligar Bay (S8), North-West Nelson
Abstract The crystalline rocks exposed on a peninsula jutting out into Ligar Bay are made up of diorite enclosing a great number of schist xenoliths in varying states of thermal metamorphism, mobilisation, and assimilation. Tourmaline-bearing granitic pegmatites, considered to be associated with the emplacement of the Separation Point Granite, cut these rocks. It is suggested that the schists and the diorite represent a pre-granite metamorphic and igneous terrain.