- The protoearth
differentiated during this time
heavy elements like Fe and Ni sunk towards the
center, lighter elements (e.g., C,
N, and O) floated to
the surface.
- As the Earth cooled, a solid crust formed,
with numerous outgassing vents (i.e., volcanos)
a primitive atmosphere of
H2, CO2, N2,
H2O, CH4, and NH3 formed shortly thereafter.
Prev
I-3
Next