Plate tectonics By Million Roberts

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Across
  1. 2. a specialist in the history of the earth recorded in rocks
  2. 3. with respect to chemistry
  3. 6. relating to or occurring or living in or frequenting the open ocean
  4. 8. use again after processing
  5. 12. a search of knowledge
  6. 13. having undergone transformation by pressure,heat,etc.
  7. 14. movement of the edge of one tectonic plate under another
  8. 16. relating to ocean depths from 2000 to 5000 meters
  9. 18. a rigid layer of the earths crust
  10. 19. a single thickness of some substance or material
  11. 20. a large continuous extent of land
Down
  1. 1. of or relating to or based on geology
  2. 4. a fissure in the earth crust
  3. 5. the branch and geology studying the folding and the faulting
  4. 7. one of the large landmasses of the earth
  5. 9. characteristic of a stage performance
  6. 10. recognize as being
  7. 11. the degree of hotness or coldness of a body or environment
  8. 15. of or relating to or characteristic of the crust of the earth and the moon
  9. 17. of or relating to the earliest known rocks formed during the Precambrian Eon