What is radioisotope dating

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We mainly date igneous rocks because at their formation the high temperatures are believed to diffuse all the daughter material out of the rock.Scientists have discovered that the anomalously old ages were from the daughter not being completely diffused from the lava immediately prior to its cooling, therefore having some radiogenic material from the Earth’s mantle.

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Scientists find the ratio of parent isotope to daughter isotope.There are different types of any one element called isotopes.Isotopes are certain types of atoms of any one element, for example, Potassium, that have a different number of neutrons.There are other methods we can use that produce a more accurate estimate of the Earth’s age.While they do not yield an exact age of the Earth, they do provide a maximum age limit for the Earth.

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