SGT_Crossword_Tectonics

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Across
  1. 5. Region of earthquakes found increasing in depth al a convergent oceanic-continental plate margin
  2. 6. Type of plate margin where two plates are sliding past each other
  3. 7. A low angle fault associated with convergent plate margins
  4. 10. Type of plate margin where two plates are moving away from each other
  5. 17. flat part of the ocean basins with an average depth of 4 km
  6. 18. Large landmass comprising the continents of the southern hemisphere
  7. 21. Discovered on the sea floor by Frederick Vine and Drummond Matthews
  8. 23. Lake dwelling reptile useful as supporting evidence for continental drift.
  9. 24. Considered for many years to be the main driving force of plate tectonics, but recently called into question
  10. 28. Boundary between the North American and Pacific Plate in California
  11. 30. Volcanic rock that is most commonly associated with convergent oceanic-continental plate margins
  12. 34. Layer of the Earth indicated by the geotherm of 1300 degrees centigrade. This layer is hot, weak and plastic.
  13. 37. German meteorologist who was right all along so to speak!
  14. 38. Feature formed at a convergent continental-continental plate margin
  15. 39. Process that occurs at continental-continental plate margins and forms rocks such as slate and schist
  16. 40. Deepest part of the oceans
  17. 41. Process by which oceans grow progressively larger
Down
  1. 1. Method used to establish the age of igneous and metamorphic rocks
  2. 2. submarine mountain chain
  3. 3. Rock type formed at depth by the melting of continental lithosphere at convergent continental-continental plate margins
  4. 4. Theory first proposed by Alfred Wegener
  5. 8. Type of plate margin where two plates are moving towards each other
  6. 9. Canadian scientist who linked all the elements of plate tectonics into a cycle
  7. 11. Formed by submarine eruptions of basalt
  8. 12. Formed by the collision of India and Eurasia
  9. 13. Process now thought to be responsible for oceanic lithosphere being subducted back into the asthenosphere
  10. 14. Process by which andesite can be generated from Ihe mantle at a convergent oceanic-oceanic plate margin
  11. 15. Type of force acting at a convergent plate margin
  12. 16. Where the oceanic lithosphere is pulled back down into the asthenosphere due to slab pull
  13. 19. Type of force acting at a divergent plate margin
  14. 20. Layer beneath the Earth's crust
  15. 22. Outer layer of the Earth comprising the crust and upper mantle which is solid and rigid
  16. 25. Scientist who first proposed the theory of sea floor spreading
  17. 26. Type of force acting at a conservative plate margin
  18. 27. Volcanic rock that is most commonly associated with divergent plate margins
  19. 29. Type of fault associated with conservative and divergent plate margins
  20. 31. Feature formed at a convergent oceanic-oceanicplate margin such as Caribbean Islands
  21. 32. Large landmasses comprising the continents of the northern hemisphere
  22. 33. These values are high over mid-ocean ridges and low over ocean trenches
  23. 35. Feature found along the center of mid ocean ridges
  24. 36. Name of the most recent supercontinent