Dating methonds for rocks

In archaeological terminology, there are two categories of dating methods: absolute and relative.

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Different methods of radiometric dating can be used to estimate the age of a variety of natural and even man-made materials.

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.

Many radioactive dating methods are based on minute additions of daughter products to a rock or mineral in which a considerable amount of daughter-type isotopes already exists.

These isotopes did not come from radioactive decay in the system but rather formed during the original creation of the elements.

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