There are no reallaws in geology. After all, most of the processes, events, and sundry items attached to geology don’t work in all situations at all times. But many geologists think there are some truths that work most of the time, including the law of superposition.
This idea states that the rock layers on the bottom are the oldest, while those on the top were formed more recently. Of course, this is not always the case, especially when mountain formation folds rock layers over, resulting in older layers lying on top of younger layers.
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