Where might we find the oldest rock on earth?
the center of continents
the center of the ocean floor
the highest mountain on earth
pushed under a tectonic plate
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The oldest rocks on Earth are typically found in the center of continents. These are known as cratons, stable and ancient parts of the Earth's crust that have not been significantly affected by tectonic activity for billions of years. Examples of rocks in these areas include the Acasta Gneiss in Canada (estimated to be about 4 billion years old) and the Nuvvuagittuq Greenstone Belt in Quebec, Canada (estimated to be about 4.28 billion years old). It is important to note that these are just some of the known oldest rocks, and new discoveries may be made in the future.
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