Rock Awards 2013 Crossword Challenge

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Across
  1. 4. New Zealands biggest glacier
  2. 5. Auckland is surrounded by these
  3. 7. New Zealand has had some very large ... over time
  4. 10. holds two of the worlds biggest Mountains
  5. 12. a very expensive stone
  6. 13. was the super continents
  7. 14. a large New Zealand Volcano
  8. 15. Proposed the idea of the drifting continents
Down
  1. 1. a layer of earth
  2. 2. a very old rock
  3. 3. this blew its top in 1886
  4. 6. is partly responsible for New Zealand earthquakes
  5. 8. The 9th Birthstone
  6. 9. in the top 3 highest mountains on earth
  7. 11. a near by glacier