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    Relative dating of a fossil 100 dating online service

    Relative dating is used commonly when looking at the relative order of geological events.What can complicate relative dating is when the strata is not the right way up!Sometimes beds of rock can turn over the other way, so be very cautious when relatively dating rocks!Instead, other methods are used to work out a fossil’s age.It is possible to calculate the age of a sample by measuring the uranium content and the density of the fission tracks.The age of volcanic rocks and ash can be determined by measuring the proportions of argon (in the form of argon-40) and radioactive potassium within them.During this process the pieces of the atom move apart at high speed, causing damage to the rock or mineral.

    This relatively new technique was developed in order to achieve more accurate dates than those obtained from the potassium-argon method.In special cases, bones can be compared by measuring chemicals within them.Buried bones absorb chemicals, such as uranium and fluorine, from the surrounding ground and absorb more of these chemicals the longer they remain buried.When volcanic rocks and minerals are formed, they do not contain fission tracks.The number of tracks increases over time at a rate that depends on the uranium content.

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