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Mount Roraima is over 2 billion years old, predating animals, trees, and dinosaurs. Its sheer 400-meter cliffs isolate an ecosystem found nowhere else on Earth (lemmy.nz)
submitted 2 days ago by time2lose@lemmy.world to c/interestingasfuck@lemmy.world
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[-] mineralfellow@lemmy.world 16 points 2 days ago

To be clear, the rocks that the mountain is made of are reasonably old (oldest on Earth is closer to 4.0 billion years, but anything >500 million is fairly rare), but the landform of a mountain is a combination of uplift and erosion, which is fairly young. The only source for the age of erosion I could find (didn't search hard) mentioned the glaciation of the Pleistocene, which seems reasonable.

this post was submitted on 09 Sep 2026
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