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Recent advances in our knowledge of the Pakhal Supergroup with
Precambrian geology of eastern India between the Ganga and
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activity anorthosite Archaean associated base basic basin beds belt Bihar bodies carried central charnockites clay collected complex conglomerate considered consists correlation deformation deposits described detailed developed district dolomite Dunn east Eastern facies field fold formations fossils Geol Soc Geol Surv Ind Geological Survey glauconite gneisses Gondwana grade granulite Group important indicate intrusive Iron Komatiite laboratory later lavas limestone Lower major Mallampalli marine marked metamorphic mineral Mulug nature northern occur older origin Pakhal period Plate Precambrian present Proc Proterozoic quartz quartzite range Rec Geol Surv recent recorded region Report represented river rocks Rohtas Saha samples sand sandstone Sarkar schists sedimentary sediments sequence Series Shale shear zone shield Singhbhum granite Soc Ind southern stratigraphic structures studies suggested Sullavai Survey of India tectonic thickness units Upper valley Vindhyan volcanic western younger