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New Technology For Dating Ancient Rock Paintings

Date:
March 16, 2009
Source:
American Chemical Society
Summary:
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.

Cave painting by the San people depicting an elephant hunt in South Africa.
Credit: iStockphoto/Gary Bedell

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.

In the study, Marvin W. 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.

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.

The research included analyzing pictographs from numerous countries over a span of 15 years. It validates the method and allows rock painting to join bones, pottery and other artifacts that tell secrets of ancient societies, Rowe said. "Because of the prior lack of methods for dating rock art, archaeologists had almost completely ignored it before the 1990s," he explained. "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."


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Marvin W. Rowe. Radiocarbon Dating of Ancient Rock Paintings. Analytical Chemistry, 2009, 81 (5), pp 1728%u20131735, Online February 9, 2009 DOI: 10.1021/ac802555g

Cite This Page:

American Chemical Society. "New Technology For Dating Ancient Rock Paintings." ScienceDaily. ScienceDaily, 16 March 2009. <www.sciencedaily.com/releases/2009/03/090316093629.htm>.
American Chemical Society. (2009, March 16). New Technology For Dating Ancient Rock Paintings. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2009/03/090316093629.htm
American Chemical Society. "New Technology For Dating Ancient Rock Paintings." ScienceDaily. www.sciencedaily.com/releases/2009/03/090316093629.htm (accessed September 20, 2014).

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