Snowball earth

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Across
  1. 1. living organisms of the time period
  2. 2. The erosive agent that cut into canyons
  3. 5. the isotope in carbonate rocks. (contains two-digit number at the end)
  4. 9. Iceberg field at the equator (one word)
  5. 12. glaciers will ____ to the land they flow over
  6. 13. Geologic evidence for sea level decrease (two words separated by hyphen)
  7. 15. This is a feature of tillite, random rock bodies.
  8. 19. Geologic feature where "missing time" is an anomaly between to beds of rocks.
  9. 22. What is the name of the supercontinent during the snowball glaciations?
  10. 23. Water plus CO2 (two words separated by hyphen).
  11. 27. from what point does a continental glacier spread from
  12. 28. This happens when a load is relieved from the crust
  13. 30. structure created by the weight of overlying glacier on the crust
  14. 31. Glaciers formed in high altitudes
  15. 33. The layer above glacial tillite. (two words seperated by hyphen)
  16. 35. the Behavior of the crust (rubber band)
  17. 37. This happened to sea level when glaciers formed in the ocean
  18. 39. CO2 is what kind of gass?
  19. 41. silly putty is a proxy for this layer of the earth
  20. 43. The modle of total ice coverage (one word)
  21. 44. How does a boulder make its way into an ocean basin?
  22. 45. A sedimentary rock formed by sediment deposition of glaciers
  23. 47. The sedimentary rock deposit that is thought to be the evidence of sea level rise
  24. 49. What was the time Eon that snowball glaciation happened?
Down
  1. 1. This is high in tropical regions
  2. 3. Where was the global supercontinent located?
  3. 4. these structures were responsible for warming the earth back up again, ending the glaciations.
  4. 6. Silicate weathering happens more at the poles
  5. 7. mechanism of early life to create energy
  6. 8. A proxy for the movement of continental glaciers.
  7. 10. the driving force that makes glaciers move.
  8. 11. Glaciers started forming at ____ latitudes
  9. 14. what is the elemental isotope used for photosynthesis? (contains a two-digit number at the end)
  10. 16. Glaciers exhibit this flow.
  11. 17. some gasses in the atmosphere help keep in ____ from space.
  12. 18. What is the name of the oldest glaciation?
  13. 20. THis was how greenhouse gasses returned to the atmosphere
  14. 21. What is the name of the youngest snowball earth glaciation?
  15. 24. minerals and free ions end up in the ____ eventually after weathering
  16. 25. This is one of the controlls of silicate weathering
  17. 26. Low viscosity materials flow easier than materials with high viscosity (true/false)
  18. 29. ____ weathering breakdown granitic rocks
  19. 32. The water source for glacial ice
  20. 34. What was the time period of the snowball earth? glaciations?
  21. 36. More of this feature of the continent was being exposed as sealevel decreased
  22. 38. glaciers at low elevation
  23. 40. controls the rate of crustal return to normal state
  24. 42. CO2 aids in ther earth keeping in ____.
  25. 45. How many snowball glaciation events occurred?
  26. 46. The first glaciation was 720 ____ years ago
  27. 48. granitic rocks may have a high ____ content.