Amino acid racemization and its relation to geochronology and archaeometry

Amino acid racemization, used as a method of relative and quantitative dating of fossils, evaluates the degree of postmortem conversion of l to d amino acid enantiomers. While extensively utilized, this method has garnered confusion due to controversial age estimates for human fossils in North Ameri...

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Bibliographic Details
Published in:Journal of separation science 2018-03, Vol.41 (6), p.1489-1506
Main Authors: Bravenec, Ardith D., Ward, Karen D., Ward, Timothy J.
Format: Article
Language:English
Subjects:
amino acid racemization
Amino acids
archaeology
Chromatography
Dating techniques
enantiomeric ratio
Enantiomers
Fossils
geochronological dating
Geochronology
Mathematical models
Racemization
Radiometric dating
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Summary:Amino acid racemization, used as a method of relative and quantitative dating of fossils, evaluates the degree of postmortem conversion of l to d amino acid enantiomers. While extensively utilized, this method has garnered confusion due to controversial age estimates for human fossils in North America in the 1970s. This paper explains the age controversy and aftermath, current chromatographic methods used in research, mathematical calibration models, and a short synopsis of other dating techniques in geochronology and archaeometry.
ISSN:1615-9306
1615-9314
DOI:10.1002/jssc.201701506