Geology

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Across
  1. 4. Name given to "scrubby evergreen" vegetation
  2. 6. Process when metallic elements combine with oxygen
  3. 8. Mineral deposit including stalactites and stalagmites
  4. 13. Needleleaf forest on high elevation on a mountain
  5. 14. Molten rock beneath Earth's surface
  6. 15. Sun's output of energy toward earth
  7. 16. Inclined surface which forms the boundaries of landforms
  8. 17. Boundary between adjoining ecosystems
  9. 18. Fracture in rock occurring without displacement
Down
  1. 1. Rich in iron & magnesium oxides
  2. 2. Provides a record of climate change as far back as 50,000 years
  3. 3. Thickness varies over extent of the planet
  4. 4. Can increase or reduce climatic trends
  5. 5. Derived from greek word "lithos"
  6. 7. Release of energy from fault lines
  7. 9. Process where rock peels in sheets
  8. 10. A large, stable, terrestrial or aquatic ecosystem
  9. 11. "The lay of the land"
  10. 12. Crustal piece that has become attached to the plates
  11. 15. A trough-shaped downward fold