Isotope dating mount st helens


22-Feb-2020 16:00

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

This reaction will continue until the last mineral in the series, biotite mica, is formed.

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

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Although these minerals crystallize in the order shown, this sequence is not a true reaction series.Such processes can cause the daughter product to be enriched relative to the parent, which would make the rock look older, or cause the parent to be enriched relative to the daughter, which would make the rock look younger.



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