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The minerals that make up igneous rocks crystallize at a range of different temperatures. The sequence in which minerals crystallize from magma is known as the Bowen reaction series. An explanation of the reaction series is provided here. Includes an exercise where students must identify which rock samples are felsic, intermediate, or mafic based on their magma composition. A second exercise asks them to analyze a scenario where porphyritic minerals form from magma due to a volcanic eruption.
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felsic magma, intrusive igneous rocks, mafic magma, magma composition, bc open textbooks, bc open textbooks: physical geology: crystallization of magma/ohio pg.ims.1.g, bowen's reaction series, n. l. bowen, norman levi bowen, ohio pg.ims.1.g, intermediate magma, magma crystallization, phenocrysts, porphyritic minerals, porphyritic texture
Classroom Considerations
- Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)
- The intended use for this resource is Instructional|practice