Toba (Other Keyword)
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Cryptotephra Discovered at Pinnacle Point Site 5-6 May Correlate with the 74 ka Eruption of Toba in Indonesia: Implications for Resolving the Dating Controversy for Middle Stone Age Sites in Southern Africa. (2015)
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Cryptotephra was identified in a sediment stack at Pinnacle Point Site 5-6, South Africa, and occur as small glass shards (less than 100 µm in size). Shards are found in sediment from the Shelly Ashy Dark Brown Sand (SADBS) and the Ashy Light Brown Sand (ALBS) layers with weighted mean OSL dates of 70.6 ± 2.3 and 71.1 ± 2.3 ka respectively. The shards are intimately mixed with sediment and are rare. A preliminary shard distribution profile shows that shards are distributed continuously through...