Age of Rock and Plate Tectonics Quiz

Question

5 of 75 of 7 Items
Question
Where would you be most likely to find the oldest rocks on Earth?(1 point)
Responses

at the outer edges of oceanic crust
at the outer edges of oceanic crust

in the middle of the oceans
in the middle of the oceans

in the middle of the highest mountains
in the middle of the highest mountains

in the middle of the continents

Answer 1

You would be most likely to find the oldest rocks on Earth in the middle of the continents. This is because continental crust is generally much older than oceanic crust, which is continuously being recreated at mid-ocean ridges. Some of the oldest rocks, such as the Acasta Gneiss and Nuvvuagittuq Greenstone Belt in Canada, are found in the continental crust.