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OUTLINE. Introduction Rock Deformation Strike and Dip—Determining the Orientation of Rock Layers Deformation and Geologic Structures Geologic Maps—Their Construction and Uses Deformation and the Origin of Mountains Plate Tectonics and the Origin of Mountains Earth’s Continental Crust
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OUTLINE • Introduction • Rock Deformation • Strike and Dip—Determining the Orientation of Rock Layers • Deformation and Geologic Structures • Geologic Maps—Their Construction and Uses • Deformation and the Origin of Mountains • Plate Tectonics and the Origin of Mountains • Earth’s Continental Crust • Geo-Recap
OBJECTIVES 1 Rock deformation results from force that changes the shape and/or size of rocks. 2 Folds, joints, and faults are three major types of deformation in rocks. 3 Deformation and geologic structures are important in the origin of many of Earth’s mountains. 4 Most of the large mountain ranges on land formed, and in some cases continue to do so, at the three types of convergent plate boundaries. 5 Terranes are small blocks of the lithosphere that have been added to the edge of continents over geologic time. 6 Mountains stand higher than adjacent crust because of their composition and thickness.