Show simple item record Duller, Geoff A. T. Wintle, Ann G. Jacobs, Zenobia 2008-12-16T10:37:37Z 2008-12-16T10:37:37Z 2003-05
dc.identifier.citation Duller , G A T , Wintle , A G & Jacobs , Z 2003 , ' Optical dating of dune sand from Blombos Cave, South Africa: I - multiple grain data ' Journal of Human Evolution , vol 44 , no. 5 , pp. 599-612 . , 10.1016/S0047-2484(03)00048-4 en
dc.identifier.issn 0047-2484
dc.identifier.other PURE: 94958
dc.identifier.other dspace: 2160/1687
dc.description Wintle, Ann, Jacobs, Z., Duller, G.A.T., (2003) 'Optical dating of dune sand from Blombos Cave, South Africa: I - multiple grain data', Journal of Human Evolution 44(5|) pp.599-612 RAE2008 en
dc.description.abstract An aeolian sand unit overlies the Middle Stone Age deposits at Blombos Cave on the southern Cape coast. These deposits contained culturally-important artefacts, including bone tools and pieces of engraved ochre, as well as a large number of worked lithics. The aeolian sand and two other remnants of the sand dune formed against the coastal cliff were dated using optical dating. To determine the dose received since deposition, measurements were made on 5 mg aliquots of purified quartz grains using the single-aliquot regenerative-dose (SAR) protocol. The results of several internal check procedures are reported and at least 15 replicate dose determinations are presented for each sample. Combining these dose values with measurements of the radioactive content of each sample resulted in an age of 69.2±3.9 ka for the unit within the cave, and a mean age of 70.1±1.9 ka for all three dune samples. This provides a minimum age for the Middle Stone Age material at Blombos Cave. en
dc.format.extent 14 en
dc.language.iso eng
dc.relation.ispartof Journal of Human Evolution en
dc.title Optical dating of dune sand from Blombos Cave, South Africa: I - multiple grain data en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Quaternary Environmental Change Group en
dc.description.status Peer reviewed en

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