Border Cave revisited: a revised ESR chronology.
In view of a decade of progress in ESR dating we have revised the ESR chronology of Border Cave. A detailed gamma ray survey in 1994 and newly calculated beta attenuation data led to total dose rate estimations that are between 0 and 30% smaller than previously estimated. Accordingly, the resulting ESR age estimates are between 0 and 30% older. The ESR dates are now in good agreement with independent age estimates, particularly(14)C and amino acid racemization. New ESR dates for the lowermost dated sedimentary layer, 5 WA (white ash), indicate that the sedimentation of the sequence started around 200 ka ago.
Grün
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Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia. rainer.grun@anu.edu.au
Beaumont
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D000818:Animals; D003743:Dental Enamel; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D005580:Fossils; D019015:Geologic Sediments / Q000737:chemistry; D015186:Hominidae; D006801:Humans; D012044:Regression Analysis