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Additional
Earth's crust
English Wikipedia - The Free Encyclopedia
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Crust (geology)
In
geology
, the
crust
is the outermost solid shell of a rocky
planet
or
natural satellite
, which is chemically distinct from the underlying
mantle
. The crusts of
Earth
, the
Moon
,
Mercury
,
Venus
,
Mars
,
Io
, and other planetary bodies have been generated largely by
igneous
processes, and these crusts are richer in
incompatible elements
than their respective
mantle
s.
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