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Across 1. along coastline 3. a mass of rock bounded on at least two opposite sides by faults. 7. a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere. 11. Generally the result of broad arching of the crust or sometimes great vertical displacement along a highangle fault. 12. Eruption of magma from the mantle: usually between plates 13. Large sections of the surface that move. 14. Plates that are moving together.

Down 2. The process by which collision of the earth's crustal plates results in one plate's being drawn down or overridden by another. 3. Formed by crust which have been uplifted and folded by compressional forces. 4. The crust and upper mantle of the earth. 5. Plates that are moving apart. 6. The region below the lithosphere. 8. a strike-slip fault that offsets a mid-ocean ridge in opposing directions on either side of an axis of seafloor spreading. 9. A large, flat, raised area of land 10. center, near middle