Continental crust is older than oceanic crust.

Question

Quizplus · Accepted Answer

Continental crust is primarily made up of granitic rock and is less dense than oceanic crust, which is primarily made up of basaltic rock. This means that continental crust is less likely to be subducted and recycled back into the mantle, allowing it to persist for billions of years. In contrast, oceanic crust is constantly being created at mid-ocean ridges and destroyed at subduction zones, leading to a much shorter lifespan. Therefore, continental crust is generally older than oceanic crust.

Continental Crust Is Older Than Oceanic Crust