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Q&A

Long term effects of erosion

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What could be the effects of erosion on a rocky Earth-sized planet on a universal time scale (in the order of $10^{40}$ years)? Let's assume that:

  • The source of sunlight is endless and almost constant, occasionally dipping in intensity causing global cooling. Generally it's sufficient to maintain complex life.
  • The planet is in a perfectly closed system, with no external interaction. There are no impacts, and all matter is perfectly confined within an 1.5 radius limit from the planet.
  • The polar caps on this planet are always frozen

I'm interested in the consequences at the geological level. Would landmasses still be present after such a long time? Is it possible to maintain some sort of mountains?

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This post was sourced from https://worldbuilding.stackexchange.com/q/101875. It is licensed under CC BY-SA 3.0.

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