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Then, however, it must be clear that the artist is referring to his or her own time, and not providing historical commentary.

Given the current status of direct chronometric dating methods for Arabian petroglyphs, it is rare that the precise age of a rock art panel can be determined.

The term refers to the fact that an approximate date can be inferred by comparison with something else of known age.

In this case, a rock art panel may be judged to be younger, older or basically contemporaneous with another petroglyph, a site, an artifact, or other evidence of known antiquity.

Often there are multiple sites of varying ages nearby and the petroglyph itself may be a palimpsest of images created through the ages.

On rare occasion, archaeological deposits can accumulate up against a petroglyph panel, concealing part or all of the art.

Although it is difficult to state the absolute ages of most of the rock art studied in this project, there are certainly general trends, best estimates and bracketing dates, which will be provided whenever possible.

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The Holocene Wet Phase, as it is called, fluctuated greatly between humid and dry periods and then reverted to a more consistent arid condition around 3800 BCE, as the rain belt retreated southward (Parker et al. The oldest known petroglyphs in Saudi Arabia are believed to date to the Neolithic period or Early Arabian Pastoral, which appears to coincide with at least part of the Holocene Wet Phase.A palimpsest of animals from different ages at Shuwaymis: Faint images of Neolithic aurochsen (wild cattle), more recent camels and cavalryman, still younger men with exaggerated hands.The patina is darker on the older images and the newer images are brighter.Many species, such as mammoth and woolly rhinoceros thrived in Eurasia and the mammoth, mastodon, camel and giant sloth lived in North America.Around 10,0000 BCE, a significant climate change occurred, altering environments, flora, and fauna in most parts of the world.

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