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Uranium lead dating process

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55-57, (1987), gives us an idea of the tremendous complexity of the processes that occur when magma solidifies.The general idea is that many different minerals are formed, which differ from one another in composition, even though they come from the same magma.A number of processes could cause the parent substance to be depleted at the top of the magma chamber, or the daughter product to be enriched, both of which would cause the lava erupting earlier to appear very old according to radiometric dating, and lava erupting later to appear younger.

uranium lead dating process-16

Evidence of this type led them to look into the possibility that a single magma might produce rocks of varying mineral content. Bowen discovered that as magma cools in the laboratory, certain minerals crystallize first.

For this reason, this arrangement of minerals became known as Bowen's reaction series.

On the upper left branch of this reaction series, olivine, the first mineral to form, Ml] react with the remaining melt to become pyroxene.

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

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.