Across
- 2. deformation imposed during mountain building.
- 7. a line on a diagram or map connecting points relating to the same time or equal times
- 8. a cone formed around a volcanic vent by fragments of lava thrown out during eruptions
- 10. the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor with basalt lava
- 12. a geological process where one tectonic plate slides beneath another, typically at a convergent plate boundary
- 13. a large depression formed when a volcano erupts and collapses
- 15. a geological phenomenon where the Earth's magnetic north and south poles switch positions
Down
- 1. the gradual movement of the continents across the earth's surface through geological time.
- 3. very large blocks of rock, sometimes hundreds of kilometres in extent
- 4. a geological feature where two or more tectonic plates move towards each other and collide
- 5. a geophysical mechanism
- 6. mostly rigid areas of lithosphere, located at major plate boundaries but rotating as more or less independent plates
- 9. the equilibrium that exists in parts of the earth's crust
- 11. a flat, low-lying valley that forms at a geographical crack or separation
- 14. a body of intrusive igneous rock.