The radiocarbon dates of organisms that derive an unknown proportion of their carbon from both marine and freshwater reservoirs are extremely difficult to ‘correct’, or, more appropriately, model.

reservoir effect radiocarbon dating-10

This is the case with the cemeteries of the Cis-Baikal region being studied as part of the international Baikal-Hokkaido Archaeology Project set up to examine hunter-gatherer cultural dynamics in eastern Asia.

Fortunately, to control for a freshwater reservoir offset, we were able to obtain a number of paired terrestrial herbivore and human material for 14C dating.

In addition,the outer surface residues systematically date younger than the inner food crusts, a discrepancy that is also knownfrom other archaeological sites.

It is suggested that these age differences are due to the mixed presence of soot andfood residue on the exterior vessel wall as opposed to more homogeneous food crusts on the internal surface.

Organic residues preserved on the outer surfaces of archaeological pottery are commonly considered to be soot and, not being subject to reservoir effects, as more reliable for radiocarbon (14C) dating compared to food crusts from the...

more Organic residues preserved on the outer surfaces of archaeological pottery are commonly considered tobe soot and, not being subject to reservoir effects, as more reliable for radiocarbon (14C) dating compared to foodcrusts from the inner surface.Dietary offsets in radiocarbon dates are becoming increasingly interesting to researchers, not only because of their impact on the reliability of chronologies but also because of the possibilities for extracting further dietary...more Dietary offsets in radiocarbon dates are becoming increasingly interesting to researchers, not only because of their impact on the reliability of chronologies but also because of the possibilities for extracting further dietary information from the 14C data itself.However, unlike food crusts, outer surface residues are never analyzed prior to14C dating.This study confronts 14C dates on inner and outer surface residues preserved on prehistoric pottery from Bazel Sluis (Belgium) with the results of stable isotope analysis and thermally assisted hydrolysis and methylationpyrolysis-gas chromatography-mass spectrometry (THM-GC-MS).While there are well-documented millennial scale Δ14C changes during the most recent deglaciation,...