Rapakivi Granite of Ezhimala Complex and its Significance

Abstract

Abstract The field characters, chemistry and the spatial association of the 678 m.y. old Rapakivi granite with gabbros and anorthosites suggest that these litho-units have developed through bimodal magmatic processes whereby heat derived from basic magma parental to the anorthositic rocks caused partial melting at or near the base of the crust to produce granitic magma with Rapakivi characteristics.