Dating prehistoric paintings Chat cibersexo online
The dates reported in this study form the biggest set of direct dates on rock art in South Africa and the only direct dates ever obtained in Botswana and Lesotho.
Lead author, Bonneau, concludes in the paper: "This protocol is a step forward in the field of rock art dating by reducing the sample size to be collected, by optimising the success rate of such dating, and by limiting the impact on such valuable paintings while providing new chronological insights." Explore further: New technology for dating ancient rock paintings More information: Adelphine Bonneau et al.
The samples that contained the most carbon-black (and thus most likely to reveal dates) were then radiocarbon dated.In a study published in the international journal Antiquity, Professor David Pearce, Director of the Rock Art Research Institute at the University of the Witwatersrand, Johannesburg, Adelphine Bonneau of Laval University, Canada, and colleagues at the University of Oxford showed that paintings in south-eastern Botswana are at least 5500 years old, whilst paintings in Lesotho and the Eastern Cape Drakensberg, South Africa, date as far back as 3000 years.The findings represent a major breakthrough in archaeological research.Using a blade or an electric drill, the team took 50 small samples from calcite that directly overlay either paintings or engravings in 11 caves in northwest Spain.Because the calcite overlays the paintings, it must be younger than the art, and so yields minimum ages.
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Indeed, it has been a major obstacle in this area of research.