Title
Geochemical constraints on the tectonic setting of the Sonakhan Greenstone Belt, Bastar Craton, Central India
Document Abstract
The Neo-Arehean Sonakhan theenstone Belt (SGB) located in the north-eastern fringes of Baster cratm. Central India, is dominated by Basalts. Andesites. Dacites and Rhyolites association. Partial melting modeling on the SG B metabasalts indicates that these rocks were derived by 20% melting of spinet ceridotite. Fractional crystallisation modeling with REE reveal that the most =rived samples represent the product of fractional crystallization of least evolved magma with 35% plagioclase, 35% clinopyroxene, 20% olivine, 5% magnetite and 5% ilmenite as fraction¬ating minerals with 40% rennining magma.