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Bc Open Textbooks: Physical Geology: Crystallization of Magma
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...
Science Education Resource Center at Carleton College
Serc: Magma Viscosity Demos
Interactive lecture provides questions and promotes group discussions about two videos that demonstrate the links between magma composition, temperature, and viscosity.
CK-12 Foundation
Ck 12: Earth Science: Magma Composition at Volcanoes
[Free Registration/Login may be required to access all resource tools.] The composition of magma affects the type of volcanic eruption.
Other
Bowen's Reaction Series [Pdf]
This textbook excerpt illustrates the reactions observed to occur between minerals and magma, and the order of these reactions during magma crystallization that was described by Norman Bowen in the 1920s.
CK-12 Foundation
Ck 12: Earth Science: Igneous Rocks
[Free Registration/Login may be required to access all resource tools.] Presents igneous rocks, which form from magma, and the two types: dense, dark mafic and less dense, light felsic. Also covers Bowen's Reaction Series.
CK-12 Foundation
Ck 12: Magma Composition, Volcanic Landforms, Hot Springs, Geysers Study Guide
[Free Registration/Login may be required to access all resource tools.] Provides a brief overview of plate tectonic processes. Includes a labeled illustration, images, and a few questions to check understanding.