Aeon — Archean

: Rocks known as TTGs (Tonalite-Trondhjemite-Granodiorite) dominate the Archean record, reflecting unique magmatic processes driven by the Earth's significantly higher internal heat.

: The Earth's crust began to stabilize, forming ancient continental nuclei known as cratons . archean aeon

During this period, the Earth transitioned from a high-heat "stagnant-lid" or "proto-subduction" state into a more modern style of global plate tectonics. characterized by an environment.

The Archean atmosphere was fundamentally different from the modern one, characterized by an environment. archean aeon