Geologic Time

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Across
  1. 2. The estimated age for something, like a rock
  2. 4. years
  3. 6. The remains of dead organisms preserved in a rock or mold
  4. 8. Useful for dating and correlating the strata in which
  5. 9. Earth's crust cooled and tectonic plates formed
  6. 11. is found
  7. 12. Lasted about 2
Down
  1. 1. Rocks in the rock layer are older than the layer itself.
  2. 2. Rocks on the bottom are always younger than the rocks on top of it
  3. 3. The exact time for something, like a rock
  4. 5. The rate at which elements decay into daughter products
  5. 7. Cuts in the rock layers Are always younger
  6. 10. Most chaotic weather at that time