Across
- 3. features like faults and dikes are newer than the rock they cut through
- 5. It is marked by the Cretaceous Tertiary extinction event.
- 7. the Earth's landmass was broken up into a substantial number of relatively small continents
- 8. the leftover remains over what roamed the Earth before us.
- 9. rocks found inside of other rocks are the older of the two
Down
- 1. this was the Age of Dinosaurs.
- 2. useful for dating and correlating the strata in which it is found.
- 4. when undisturbed, the oldest rock layers are underneath the newest rock layers
- 6. the amount of time it takes for half of a remaining isotope to decay.