Earth’s first outer layer was single solid shell

  • Shortly after the Earth formed and began to cool, its first outer layer was a single, solid but deformable shell which later began to fold and crack more widely, giving rise to modern plate tectonics.
  • “Models for how the first continental crust formed generally fall into two groups:
  • Those that invoke modern-style plate tectonics and those that do not.

Source: The Hindu

Leave a Reply