A multi‐method approach to dating the burial and skeleton of Kiacatoo Man, New South Wales, Australia
Autor: | Justine Kemp, Rachel Wood, Jon Olley, Rainer Grün, Colin Pardoe, Tim Pietsch |
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Rok vydání: | 2019 |
Předmět: |
010506 paleontology
Disturbance (geology) Thermoluminescence dating Optically stimulated luminescence Paleontology Sediment Fluvial Last Glacial Maximum Structural basin 010502 geochemistry & geophysics 01 natural sciences Arts and Humanities (miscellaneous) Earth and Planetary Sciences (miscellaneous) Bioturbation Geology 0105 earth and related environmental sciences |
Zdroj: | Journal of Quaternary Science. 34:662-673 |
ISSN: | 1099-1417 0267-8179 |
DOI: | 10.1002/jqs.3165 |
Popis: | Kiacatoo Man, a large, rugged Aboriginal adult buried in the Lachlan riverine plains of southeastern Australia, was discovered in 2011. Laser‐ablation uranium series analysis on bone yielded a minimum age for the burial of 27.4 ± 0.4 ka (2σ). Single‐grain, optically stimulated luminescence ages on quartz sediment in which the grave had been dug gave a weighted mean age of 26.4 ± 1.5 ka (1σ). Luminescence samples from the grave infill and from sediment beneath the grave exhibit overdispersed dose distributions consistent with bioturbation or other disturbance, which has obscured the burial signal. The overlap between the minimum (U‐series) and maximum (luminescence) ages places the burial between 27.0 and 29.4 ka (2σ). Luminescence ages obtained from the channel belt of between 28 ± 2 and 25 ± 3 ka indicate that fluvial sedimentation was occurring before the Last Glacial Maximum, which is consistent with the broader geomorphic setting. Together, these results are internally and regionally consistent, and indicate that Kiacatoo Man was one of the more ancient individuals so far identified in Australia. His remains are important to our understanding of patterns of biological variation and other processes that have shaped people in the Murray‐Darling Basin through time. |
Databáze: | OpenAIRE |
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