In 1922, Norman Levi Bowen and his colleagues determined the sequence in which silicate minerals crystallize as magma cools (Chernicoff 56). This work made it possible to summarize a complex set of geochemical relationships, called Bowen's Reaction Series.
This series shows that silicate mineralscancrystallize from mafic magmas in two ways, in a discontinuous series or a continuous series.
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