Principle of relative dating

Some of the most useful fossils for dating purposes are very small ones.For example, microscopic dinoflagellates have been studied and dated in great detail around the world.Relative dating is used to arrange geological events, and the rocks they leave behind, in a sequence.

That fossil species may have been dated somewhere else, so you can match them and say that your fossil has a similar age.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.Correlation with them has helped geologists date many New Zealand rocks, including those containing dinosaurs.Bring relative dating principles to life with the activity Rock layers and relative dating.

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