Across
- 3. Represents a major interruption of deposition and a signigicant time gap between formation of successive layers of rock.
- 4. Absolute time is measured by.
- 7. isotopes Parent isotopes decays in to.
- 8. Are presurved animals and plants.
- 9. Comes before Daughter Isotops.
Down
- 1. Rocks have to be made before this can happen.
- 2. life The rate at which isotopes decompose.
- 5. Layers of sedimentary rock on either side of the unconformity are parallel.
- 6. The smallest time in Geological Time.
- 10. One of the Major times in the Geologic time scale.