Thus, Ba levels can neither be correlated directly with <a href=""><img src="" alt=""/></a> barite occurrence nor with times during the high barium eolian influx on the stone varnish.

Instead, Ba content is correlative with Mn distribution for which there has yet to become a hypothesis that is substantiated its event. This further supports the idea that fixing for Ba concentration in cation ratio curves will be impossible.

Any rock varnish dating curve calibrated using such erroneously high Ti values will possess a slope that is too low compared to that using Ti values corrected for Ba if Ba and Ti peak overlaps are not adequately decomposed during chemical analyses of rock varnish. Consequently, we stress the requirement to revisit all rock varnish curves that are dating to refine them as appropriate. Further modification might be necessary as our understanding of varnish chemistry, deposition and diagenesis increases, whether that be through accumulated information or by the application of brand new techniques that are analytical.

The inadequacy of SSQ to offer dependable Ti levels within the existence of Ba indicates the necessity for reanalysis.. Show all pages in this specific article.

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Blackwell and C. Buck More by P. Blackwell Re Search this writer in:. Not only is it vital to the establishment of archaeological chronologies, radiocarbon relationship is key to the establishment of the time lines for several Holocene and belated Pleistocene palaeoclimatic studies and palaeoenvironmental reconstructions. Read more