Igneous Charno-Enderbites and Charnockites (C-Type Magmas) around Dindigul, Tamil Nadu

Chamockites from the Southern Granulite Terrane were considered to be product of regional high-grade metamorphism, aided by C0₂-rich and alkaline fluids. Here, we report the occurrence of intrusive charno-enderbites and charnockites around Dindigul, which consist of pyroxenes, plagioclase, alkali feldspar, quartz, biotite, titanomagnetite, ilmenite and apatite. These rocks are characterized by higher abundance of K₂O, TiO₂, and P₂O₅, and lower contents of CaO with lower m* for a given SiO₂ content, relative to metamorphic charnockites from the Biligiri Rangan and Nilgiri granulites, and have the geochemical similarities with the Ardery charnockitic intrusions from Antarctica.