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Nature 421, 901-903 (27 February 2003) | doi:10.1038/421901a
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Geochemistry: Lost terrains of early Earth
Stein B. Jacobsen
Abstract
Isotope data provide insight into the earliest phases of terrestrial evolution. The latest reappraisal supports the view that the early Earth had a cratered crust which crystallized from a magma ocean.
Unlike Earth, several bodies such as the Moon, Mercury and Mars have a clear record of their surface history dating back almost to the origin of the Solar System. This early crust is now no longer evident on Earth, where the oldest rocks are 3.
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