Table of Contents
Igneous Rocks
Plate Tectonics
Melting Within the Earth
The Geothermal Gradient
Pressure
Partial Melting
Partial Melting
Magmas and Lavas
Cooling Rate
Texture and Cooling Rate
Textures of Igneous Rocks
Variations in Texture
Porphyritic Texture
Variations in Igneous Rocks
Obsidian is a Natural Glass
Mineralogy - Variation in Temperature
Crystallization Sequences
Bowenís Reaction Series
Viscosity
Mineral Assemblages - I
Mineral Assemblages - II
Classification of Igneous Rocks
Names of Igneous Rocks
Plate Tectonics - Divergent
Plate Tectonics - Subduction
Effect of Water on Melting
Evolution of Magmas
Crystal Fractionation
Magmatic Differentiation
Magma Mixing and Assimilation
Magmatic Migration
Shapes of Intrusive Bodies
A Hypothetical Cross Section
Palisades Sill, New York
Cross Section Through a Sill
Dikes - Cut Across Surrounding Material
Sills Are Enclosed by Surrounding Materials
Sill in Glacier National Park
Laccolith in Glacier Park
Feeder Pipe and Geologist
Plate Tectonic Setting
Magma Chamber - Ridge
Magma Chamber - Subduction
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