Simple definition relative dating
For example, a study of the Amitsoq gneisses from western Greenland used five different radiometric dating methods to examine twelve samples and got agreement to within 30 million years on an age of 3,640my.
Relative dating is used to arrange geological events, and the rocks they leave behind, in a sequence.
This proprietor was a man of great opulence, and a relative of Naomi."My relative believes that Mr. He was another friend, and even a relative, of the "illustrious master."Have you heard him speak of late of any relative of mine or his, called Pecksniff?
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.
Suppose you find a fossil at one place that cannot be dated using absolute methods.
That fossil species may have been dated somewhere else, so you can match them and say that your fossil has a similar age.
Some of the most useful fossils for dating purposes are very small ones.