Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks What Are Igneous Rocks? How Are Igneous Rocks Classified? How Does Igneous Activity Relate What Happens When Magma Cools Underground? How Do Different Types of Magma Form? to Plate Tectonics?

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Igneous Rock Apparently Intruded Pre-Existing Rock as Liquid. Figure 6.2

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Classification Chart for the Most Common Igneous Rocks Figure 6.4

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Relationship of Ship Rock in Mexico to the Former Volcano Figure 6.6b

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at (A) Cracks Before Intrusion of Magma (B) Concordant Intrusions (Sills) and Discordant Intrusions (Dikes) Figure 6.7

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Dikes Intruded into Banded Gneiss Figure 6.8 Photo by N. Eyles

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at After Erosion, Magma Diapirs Formed into Plutonic Rock are Exposed as a Batholith and a Stock Figure 6.10

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Diapirs of Magma Travel Upward from the Lower Crust and Solidify in the Upper Crust Figure 6.11

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Geothermal Gradients at Two Parts of the Earth’s Crust Figure 6.13

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Melting Temperature of a Mineral With and Without Water Present Figure 6.14

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Melting Temperatures for Mixtures of Quartz and Potassium Feldspar at Atmospheric Pressure Figure 6.15

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Bowen’s Reaction Series Figure 6.16

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Differentiation of a Magma Body Figure 6.17

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Assimilation Figure 6.18

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Mixing of Magmas Figure 6.19

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Relationships between Rock Types and Their Usual Plate Tectonics Setting Table 6.2

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Basaltic Oceanic Crust and the Underlying Ultramafic Mantle Rock Form at a Divergent Boundary Figure 6.20

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Basaltic Oceanic Crust and the Underlying Ultramafic Mantle Rock Form at a Divergent Boundary Figure 6.21

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Generation of Magma at a Convergent Boundary Figure 6.22

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Young, Hot, Oceanic Lithosphere is Buoyant and Subducts at a Shallow Angle Figure 6.23

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Mafic Magma adds Heat to the Lower Crust, Resulting in Partial Melting to Form a Granitic Magma Figure 6.24

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Answers to Selected Testing Your Knowledge Questions B A D A D C B D B A B C B

Chapter 6: Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks Visit the Online Learning Centre at Additional Resources Student Resources Student Online Learning Centre The robust Student Edition of the Online Learning Centre at features quizzes for study and review, interactive exercises and animation, as well as additional boxed readings, searchable glossary, “Virtual Vista” environments, suggestions for further reading, and much more! Laboratory Manual The Lab Manual to accompany Physical Geology and the Environment has been created as a resource for laboratory sessions in physical geology, mirroring the "Inquiry-Based Approach" of the text. Structured on exercises and corresponding background concepts, the lab manual contains student-friendly worksheets, and has been perforated for easy lab use. Instructor Resources Instructor Online Learning Centre The OLC at includes a password-protected Web site for Instructors. The site offers downloadable supplements and access to PageOut, the McGraw-Hill Ryerson Web site development centre. Instructor’s Manual – The IM contains a chapter overview, list of changes per chapter, chapter learning objectives, further information on boxed features, short and long discussion/essay questions, and details on additional readings and resources outside the textbook. Test Bank – Contains a bank of multiple-choice and true/false questions per chapter. Microsoft PowerPoint Presentation – This presentation system offers visual presentations that may be edited and manipulated to fit a particular course format. They also contain selected solutions to the problem material. Transparencies A set of more than 200 transparencies tied to the text content are available for instructors.