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Across 2. when one tectonic plate slides under another. 6. The place on the Earth's surface directly above the rubbing 7. what happens when two tectonic plates pull apart from each 8. one of the well-accepted theories for the cause of the Permian 9. The way organisms got trapped in Mt Wapta. 10. The scale used to determine the strength of an earthquake. 12. the process of life, death, burial, preservation. 14. A major product that supports Alberta's economy. 17. what happens when two tectonic plates rub against each other 18. A single super-continent. 19. how high or low a wave goes away from the ``0-line''. 20. Measures the movement of the Earth's crust.

Down 1. An amazing example of Cambrian fossils, found on Mt Wapta 3. The period in which Alberta's oil beds were formed. 4. The place where two tectonic plates rub against each other 5. Two little mini-continents (BC and the Western States) that 11. Allows geologists to identify what types of rocks are below 13. The era in which an explosion of multi-cellular organisms took 14. pass through solids, liquids and gases., and have no amplitude. 15. Pass through solids only. Have amplitude and carry lots of 16. The form of life from which Alberta's wealth is derived.