The Bathani volcano-sedimentary sequence(BVSs)is a typical example of volcanic-plutonic complex from the Proterozoic Chotanagpur Granite Gneiss Complex.We conducted petrological and geochemical studies on two domains ...The Bathani volcano-sedimentary sequence(BVSs)is a typical example of volcanic-plutonic complex from the Proterozoic Chotanagpur Granite Gneiss Complex.We conducted petrological and geochemical studies on two domains of the BVSs;one is a granite pluton,while the other is a subvolcanic rhyolite dome.These two domains were intruded by mafic magmas during their evolution leading to magma mixing.The mafic rocks show tholeiitic trend,while calcalkaline affinities are displayed by the felsic rocks.The rocks display enriched LILE and fractionated REE patterns with enrichments in LREE relative to HREE.展开更多
基金a CSIR grant vide Project no.24(0317)/12/EMR-II.Bibhuti Gogoi acknowledges a CSIR JRF/SRF fellowship no.09/045(1146)/2011-EMR1.
文摘The Bathani volcano-sedimentary sequence(BVSs)is a typical example of volcanic-plutonic complex from the Proterozoic Chotanagpur Granite Gneiss Complex.We conducted petrological and geochemical studies on two domains of the BVSs;one is a granite pluton,while the other is a subvolcanic rhyolite dome.These two domains were intruded by mafic magmas during their evolution leading to magma mixing.The mafic rocks show tholeiitic trend,while calcalkaline affinities are displayed by the felsic rocks.The rocks display enriched LILE and fractionated REE patterns with enrichments in LREE relative to HREE.
