Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
ANOTHER geology question!?
in general, what happens in terms of composition as crystallization proceeds down the bowens reaction series?
3 Answers
- 1 decade agoFavorite Answer
Depends on the type of magma
The bowens reaction series is a graph that tells which minerals will crystalize in magma at a given temperature. The first ones to crystalize will be the ones that cool at the hottest temperatures
In felsic magmas, various types of plagioclase will crystallize first, then orthloclase, muscovite and finally quartz
In mafic magmas, olivine will be first followed by pyroxene, amphibole and finally biotite
The bowens process will tell you the temperature a magma was when it cooled
- jobinojLv 41 decade ago
In general, the composition of minerals becomes more felsic (higher in silica). Plagioclas crystals will go from Ca-rich to Na-rich.
Here is a diagram showing the progression:
