Racemization dating method
For example, JJA Worsaae used this law to prove the Three Age System.
For more information on stratigraphy and how it is used in archaeology, see the Stratigraphy glossary entry.
Factors that impact the meaning of archaeological dates are discussed.
A brief review of the history of archaeological dating is then presented, followed by a description and appraisal of the different dating techniques used in archaeology.
Without those, the archaeologists were in the dark as to the age of various societies. The use of tree ring data to determine chronological dates, dendrochronology, was first developed in the American southwest by astronomer Andrew Ellicott Douglass.
Absolute dating, the ability to attach a specific chronological date to an object or collection of objects, was a breakthrough for archaeologists.
The sediment infilling the egg provided material for luminescence dating that minimized problems of association.
Age estimations from AAR, C and U series methods were obtained from the eggshell and optically stimulated luminescence (OSL) of the infilling sediment.
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.