Iron catastrophe
This article needs additional citations for verification. (December 2015) |
The iron catastrophe is a postulated major geological event early in the history of Earth, where heavy metals such as iron and nickel congregated in the core during a geologically brief period.
The original
Formation of Earth's magnetosphere
This large spinning mass of super-hot metal is responsible for the creation of the
Another theory, however, suggests Mars did once experience its own iron catastrophe and was once shielded by a magnetosphere. By this theory Mars has simply cooled faster than the Earth, gradually solidifying its dynamic iron center, hence shutting down its magnetosphere. The finding of signs of liquid water once existing on Mars suggests that it once had its own magnetic shield to keep the water in the atmosphere of the planet from being blown into space by solar wind.[2]
See also
References
External links
- Lecture // Columbia university, GEOLOGY V1001x