Geologic Time scale

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Across
  1. 3. rock layers are older than the one above
  2. 6. Age general age of a fossil or rock
  3. 9. a scientist who studies the earths crust
  4. 10. age the exact age of a rock or fossil
Down
  1. 1. cutting a disturbance in the layers of rock
  2. 2. The remains of a once living object
  3. 4. Precambrian and Phanerozoic are
  4. 5. A rock is older than the one it's in
  5. 7. Fossils that are good for relative age
  6. 8. Rock layers