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Just learned how much of the Grand Canyon is actually missing
Honestly, I was reading a book about rock layers last week and it said over a billion years of rock record is just gone from the Grand Canyon. They call it the Great Unconformity. It's like a huge chunk of time got erased, and you can see the gap between two rock layers clear as day. I always thought the whole stack was there, but nope. Found it in a geology textbook from my local library. Has anyone else seen a really clear unconformity in person?
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taraj111mo ago
A billion years just gone?
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taraj111mo ago
Look at the actual study. It's not saying a billion years of history vanished. They found a gap in the rock record, like a huge chunk of time with no layers. Means erosion wiped that part away, not that the time itself didn't happen.
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