What crust last longer out of Ocean and landmass

Answer 1

Generally, landmass crust lasts longer than oceanic crust. This is because oceanic crust is constantly being generated at mid-ocean ridges through volcanic activity and then being consumed at subduction zones where it sinks back into the mantle. This process, known as seafloor spreading and subduction, leads to the recycling of oceanic crust.

On the other hand, landmass crust, also known as continental crust, is generally thicker and less dense than oceanic crust. It is also more buoyant and less likely to sink into the mantle. As a result, continental crust tends to be preserved over long geological periods, with some of the oldest parts of the crust dating back several billion years.