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CHAPTER 4 SECTION 3 Sedimentary Rock

1. Intrusive rock forms below the surface and has a coarse-grained texture. Extrusive rock forms above the surface and has a fine-grained texture. 2. basalt, rhyolite 3. A stock or dike forms. Then, the rock around it erodes away. The igneous rock is left over as a volcanic neck. 4. A dike cuts across rock layers, but a sill is