Describe the limitations of obsidian hydration dating
Given the establishment of a difference between hydration and optical boundaries following this research and the inherently small hydration bands of artefacts of such a young age it would seem that this investigation should be repeated to see if the margin of error can be reduced using SIMS (Anovitz et al., 1999).
Unfortunately, traditional methods for OHD relied on visual analysis meaning that there was still a significant amount of error.
SIMS therefore has the potential in a New Zealand context to not only overcome the issues of radiocarbon calibration but to offer reduced costs and increased efficiency for archaeological research.
This project assesses the viability of using SIMS in New Zealand archaeology by comparison of its accuracy with established radiocarbon dates.
In that time archaeologists have used the method alongside independent data from Thermo Luminescence and Radiocarbon dating with results showing good correlation to the established chronologies (Riciputi et al., 2002; Stevenson et al., 2004; Liritzis and Laskaris, 2009; Liritzis, 2010; Laskaris et al., 2011).
While margins of error were acceptable Anovitz et al.