Continental Alkaline Maginatism Vis-a-vis the Indian Subcontinent: A Documentary Profile

Archaean alkaline magmatism, constituting one of the rare global phenomena, was hitherto i ecorded only from the Australian and Noi th American (Canada and Greenland) continents With the recently reported occurrence of a late Archaean syenite pluton at Koppa] in the eastern Dharwar craton of India, the Asian continent has also entered into the record for hosting such a raie magmatic event Worldwide, alkaline magmatism was again sparsely manifested during Palaeoproterozoic time and the reported occurrence of Palaeoproterozoic syenite and carbonatite bodies from certain parts of India therefoie assumes considerable significance The Indian subcontinent was the target of alkaline-carbonatite magmatic activities during Mesoproterozoic, Neopioterozoic, Cretaceous and Eocene periods The compositional diversity of continental alkaline magmatism, as manifested in the Indian subcontinent during different geological times, has been documented here to provide a wider perspective foi investigating the Indian alkaline rocks in future.