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When looking at mid ocean ridge, the oldest rocks are
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where can oldest rock found?
The Nuvvuagittuq Belt on the coast of the Hudson Bay in Northern Quebec. Scientists have found the oldest known rocks on Earth. They are 4.28 billion years old, making them 250 million years more ancient than any previously discovered rocks.Sep 25, 2008
The oldest  rocks are pushed to the subduction zone
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