geologic time scale

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