How do rocks provide a history of the earth?
Nov 29, 2016
Rocks provide evidence for changes in the Earth.
The ideas about rocks really started with the :
Wegener’s theory ( theory of continental drift )
* If you want me to explain the theory just ask!
Geologists can use other evidence from rocks such as:
- Looking at cross-cutting features (rock that cuts across another is younger)
- Using fossils (species existed/ became extinct during certain time periods)
- Deepness of the rock (younger rocks are usually on top of older ones).