5 ms·

I wonder if there are continents we'll never know about because they get completely subducted and aren't part of any existing continent today.

• mr_toad 3y ago
  The map goes back less than a billion years. We don’t know much about the shape of the Earths continents for the first few billion years.
  • rand0mx1 3y ago
    Movement of plate tectonics started probably 750 million years ago. https://www.youtube.com/watch?v=DI6SemRT2iY https://www.youtube.com/watch?v=DI6SemRT2iY
    • sanxiyn 3y ago
      Maybe the situation has changed recently, but as I understand there is no scholarly consensus on when plate tectonics started and it is the topic of active debate. For example Onset of Plate Tectonics (2011) https://www.science.org/doi/10.1126/science.1208766 https://www.science.org/doi/10.1126/science.1208766 says: > The further back we look into the geological past, the more obscured the view, masked by an increasingly fragmentary geological record. This has resulted in a controversy on whether plate tectonics operated the same way, or even at all, during early Earth history.