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Determination of the area density of spontaneous fission tracks (ρ s ) in glass shards of Toba tephra is a reliable way to distinguish between the Youngest Toba Tuff (YTT) and the Oldest Toba Tuff (OTT). The ρ s values for YTT, uncorrected for partial track fading, range from 70 to 181tracks/cm 2 with a weighted mean of 108±5tracks/cm 2 , based on 15 samples. Corrected...
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