How do we know how earth looked like millions years ago? Like places of continents and how they moved?
In: 5
The continents are kind of like a puzzle, some literally in shape (ex. Africa and S. America), but all of them in rock formations. Whole geological formations just match others on other continents in ways that only makes sense if they were the same one.
Only it’s not just one “rock puzzle”, it many layers of them, like assembling one puzzle, printing a new picture over it and re-cutting it a different way. It’s not even a metaphor, that’s literally what happened. New rock layers were laid down on top of old ones, all the while continents merge and separate in new configurations.
But it took centuries to figure it all out. Matching up all the rocks of different ages to other rocks of the same age in different places was the life’s work of generations of geologists.
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