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