Relative archaeological dating methods adrienne curry christopher knight dating

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Some of the most useful fossils for dating purposes are very small ones.

Patination analysis The surface oxidation of artifacts or even petroglyphs and other rock art and the build up of a patina or desert varnish can be examined and a dated. are very proficient, though, at looking at pot sherds in sites of the American southwest and determining what culture and period the site is from. Different species of ammonites lived at different times within the Mesozoic, so identifying a fossil species can help narrow down when a rock was formed.Correlation can involve matching an undated rock with a dated one at another location.While human cultural remains are rarely found in these layers, sites of human habitation can be relatively dated by comparing associated pollen and diatoms.This is a useful tool in corroborating other methods of dating.

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