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c/geology-rocks•holly_williamsholly_williams•19d ago

I used to think the Grand Canyon was just a big hole in the ground.

I went on a guided hike there last spring and the guide, Sarah, pointed out the Kaibab Limestone layer at the very top. She said it's 270 million years old and was once a sea floor. That made it click for me that I was looking at a giant stack of ancient worlds, not just a hole. Has anyone else had a rock formation suddenly make sense like that?
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margaret_flores17
margaret_flores1718d agoProlific Poster
Got me thinking about Dylan's joke. If we're getting frequent flyer miles for time travel, what's the exchange rate? A million years for one mile? You'd have enough for a trip to the moon just from that top layer. Makes you wonder who's running that rewards program.
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blairwhite
blairwhite15d agoMost Upvoted
The TSA would confiscate those miles at the security checkpoint.
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dylanbarnes
Did your guide mention how many frequent flyer miles you get for time traveling through rock layers?
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