Abstract
The transformation of sedimentary rocks to a rock of quartz-diorite aspect and mineralogy by a process of granitization, characterized by the introduction of an alkali-felspar magmatic fluid, has recently been described by the writer from the western end of the Criffell-Dalbeattie igneous complex (1937, pp. 471–7).1 In the present paper the geochemistry of this process is considered in the light of supplementary analytical data.