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21-Mar-2016 02:59

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To me it has been a real eye opener to see all the processes that are taking place and their potential influence on radiometric dating.

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Here I want to concentrate on another source of error, namely, processes that take place within magma chambers.

Lava (properly called magma before it erupts) fills large underground chambers called magma chambers.

Most people are not aware of the many processes that take place in lava before it erupts and as it solidifies, processes that can have a tremendous influence on daughter to parent ratios.

These long time periods are computed by measuring the ratio of daughter to parent substance in a rock and inferring an age based on this ratio.

This age is computed under the assumption that the parent substance (say, uranium) gradually decays to the daughter substance (say, lead), so the higher the ratio of lead to uranium, the older the rock must be.

Lava erupting earlier would come from the top of the magma chamber, and lava erupting later would come from lower down.



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