Evaluating quaternary dating methods: Radiocarbon, U-series, luminescence, and amino acid racemization dates of the last Pleistocene emu egg

Date

2009

Authors

Magee, John
Miller, Gifford Hubbs
Spooner, Nigel
Questiaux, D
McCulloch, Malcolm
Clark, Peter A

Journal Title

Journal ISSN

Volume Title

Publisher

Elsevier

Abstract

A whole emu egg, with infilling sediment believed to be coeval with egg laying and burial, was found in late Pleistocene lunette sediments near Lake Eyre, central Australia. The stratigraphic context and initial amino acid racemization (AAR) results suggested an age between 25 ka and 35 ka, ideal for a multiple cross-dating comparison. The sediment infilling the egg provided material for luminescence dating that minimized problems of association. Age estimations from AAR, 14C and U series methods were obtained from the eggshell and optically stimulated luminescence (OSL) of the infilling sediment. All methods agreed within their respective dating uncertainties confirming the utility of all four methods. They indicate an age for the emu egg of 31.24 ± 0.34 ka.

Description

Keywords

Keywords: age determination; amino acid; bird; carbon isotope; dating method; eggshell; infill; Pleistocene; racemization; stratigraphy; Australasia; Australia; Lake Eyre; South Australia AAR; OSL; Quaternary dating; Radiocarbon; U series

Citation

Source

Quaternary Geochronology

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1016/j.quageo.2008.10.001

Restricted until

2037-12-31