Ams dating rock art
A new dating method finally is allowing archaeologists to incorporate rock paintings — some of the most mysterious and personalized remnants of ancient cultures — into the tapestry of evidence used to study life in prehistoric times. Rowe points out that rock paintings, or pictographs, are among the most difficult archaeological artifacts to date.They lack the high levels of organic material needed to assess a pictograph's age using radiocarbon dating, the standard archaeological technique for more than a half-century.Most radiocarbon dates on rock paintings have been attained through three major techniques: (1) dating the carbon from black paintings with charcoal pigments; (2) dating other pigments that are also organic, and more rarely pigments that include discrete organic materials that can be removed physically; and (3) dating the carbon extracted from mineral pigmented paintings in which organic matter was added in the preparation of the paints.All of these techniques have distinctly different advantages and challenges in their application.This finding has profound implications for our understanding of hunter-gatherer religion in southern Africa." Research was conducted in the Thune Dam in Botswana, the Metolong Dam area in the Phuthiatsana Valley of Lesotho, and the Drakensberg Escarpment of the Eastern Cape in the 'Nomansland' region of South Africa.A total of 43 new dates were produced from these three areas, including the first direct dates on rock paintings ever in Botswana and Lesotho.The research included analyzing pictographs from numerous countries over a span of 15 years.
"But with the ability to obtain reliable radiocarbon dates on pictographs, archaeologists have now begun to incorporate rock art into a broader study that includes other cultural remains." Archaeologists have discovered a cluster of 12 unusual stones in the back of a small, prehistoric rock-shelter near the town of Boquete in Panama.This reduction in sample size opened the way for even the small amounts of organic matter in rock paintings to be dated starting a decade later in 1987.Assigning painted images to a particular time period and, thus, a prehistoric culture, allows archaeologists to gain information on the artistic, cultural, technical and religious aspects of a people. Rowe) One of the more frequently asked questions about rock art is: How old is it?There was a revolution in our ability to answer that important question starting three decades ago (1977).C dating in research on calcium oxalate crusts associated with open air rock art of the Iberian Peninsula.In this paper we present two dates linked with three eye-idol pictographs at Abrigo de los Oculados (Henarejos, Cuenca, Spain).Rowe describes a new, highly sensitive dating method, called accelerator mass spectrometry, that requires only 0.05 milligrams of carbon (the weight of 50 specks of dust).That's much less than the several grams of carbon needed with radiocarbon dating.These dates open the floodgates for researchers to ask and answer questions about the rock art that have baffled them for decades. In some sites, paintings continued to be made for more than a thousand years."This is astonishing," says Pearce, "people returned to the same rock shelters over very long periods of time to make rock paintings very similar to those made centuries or millennia before.