Ice Age shows Mammoths, Dinosaurs, the ice age, continental drift. But, at the same time, nothing's really serious. A guy run on the core of the Earth to change environment.
Can Ice Age questions be asked on this site?
It's a tricky one. The main film series is best described as a "computer-animated comedy-drama adventure film".
In and of itself, the films are neither science fictional, nor especially fantastical (talking animals don't make a film a fantasy) and the main topic of the first two film (the ice age) is an historical event. The third film obviously has a more fantastical aspect (dinosaurs vs mammoths)
On the other hand, some elements of the film series do contain strong sci-fi. It would definitely be on-topic to ask about those.
I consider this type of movie as a historical movie with sci-fi and some fantasy stuff put in. So even though it revolves around historical events it does include some sci-fi and fantasy elements in it. So in theory it's both suitable and unsuitable. In my opinion I would not downvote any question based on the Ice age series unless the question is "When did the Ice Age happen?"