Where would you be most likely to find the oldest rocks on Earth in the middle of the highest mountains in the middle of the continents in the middle of the oceans at the outer edges of oceanic crust

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You would be most likely to find the oldest rocks on Earth in the middle of the continents, particularly in areas known as cratons or shields. These regions often contain ancient continental crust that can be over 3 billion years old. While the highest mountains may have some ancient rocks, they generally consist of younger sedimentary and metamorphic layers. The oceanic crust is continually being recycled at mid-ocean ridges, which means it is generally younger compared to continental crust.