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Australia holds the oldest continental crust on Earth, researchers have confirmed, hills some 4.4 billion years old. For more than a decade, geoscientists have debated whether the iron-rich Jack Hills of western Australia represent the oldest rocks on Earth.
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Answer:
Craton
A craton is an old and stable part of the continental lithosphere, which consists of Earth's two topmost layers, the crust and the uppermost mantle.