Across
- 2. same fossils found on the same layer through different regions of the earth
- 4. The amount of time takes for half of a remaining isotope to decay
- 5. oldest layer on the bottom youngest on the top
- 7. represent a period of time or radioactive decay of specific isotopes
- 8. a fault or other body of rock cuts through another body of rock
Down
- 1. of a rock or fossil compared to other rocks and fossils
- 3. exact or absolute age of a rock or fossil
- 6. the law states clasts in a rock are older than the rock itself