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We'll even visit the Grand Canyon to solve the mystery of the Great Unconformity!
Imagine that you're a geologist, studying the amazing rock formations of the Grand Canyon.
This animation shows the formation of an angular unconformityone where the layers above and below the unconformity are not parallel to each other, but form an angle.
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Your goal is to study the smooth, parallel layers of rock to learn how the land built up over geologic time.
Now imagine that you come upon a formation like this: What do you think of it? How can you make any conclusions about rock layers that make such a crazy arrangement?
Birds occupy all continents and habitats but, of course, some continents & some habitats have more species than others.