Some Radiocarbon Dates for Tufas of the Craven District of Yorkshire

14 C dates of relict tufa deposits at Gordale indicated a Subboreal age when the carbonate age was corrected with empirical bedrock dilution factors ‘q’ of 0.79 or 0.85. Estimates of ‘apparent age,’ based on extrapolated δ 13 C values were about twice those obtained with q, and the 1 σ error was large. The δ 13 C values of tufa samples were not correlated with carbonate age and were close to −10. Application of q values in this district requires caution as they appear to be site-specific. We recommend that wherever possible, levels of 13 C and 14 C are measured in the associated tufa-depositing water, and an empirical dilution factor employed

Absolute dating · Archaeology · Bedrock · Carbonate · Geography · Mineralogy · Radiocarbon dating · Tufa · Archaeology and ancient environmental studies · Chemistry · Geology and Paleoclimatology Research · Pleistocene-Era Hominins and Archaeology · Geology · Paleontology

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