Electron Spin Resonance (ESR) Dating of Fossil Tooth Enamel
Electron paramagnetic resonance (EPR) dating of fossil tooth enamel
Electron spin resonance (ESR) dating: a chronometric dating method based on the evaluation of the exposure of some materials to natural radioactivity, which is quantified in terms of absorbed radiation dose and corresponds to the energy deposited in the matter by ionizing radiations.
DE: equivalent dose. The total absorbed radiation dose as measured in the laboratory.
ka: 1,000 years.
Ma: 1,000,000 years.
The first ESR dating applications to fossil bones were published in the early 1980s (e.g., Ikeya and Miki, 1980). Given the potential of this kind of material, studies were quickly reoriented toward fossil tooth enamel, which has more suitable characteristics for dating (Grün and Schwarcz, 1987). Then, the method progressively gained in accuracy over the following decades, especially via a better understanding of the ESR signal of fossil enamel and its behavior with the absorbed...
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