Abstract:Youngest Toba Tuff (YTT) ash preserved at two different localities in the Quaternary sediments of Purna alluvial basin have been categorised as of the primary nature on the basis of for their lithological, physical and geochemical characteristics. These ash are light grey, massive to faintly laminated and occur as discontinuous beds of 15-20 cm thickness, extending laterally for 70-100 m that are hosted in yellowishbrown, laminated silty-clay lithounits. It consists of high-quantity vitric grains represented b… Show more
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