The youngest crust on Earth is typically found at mid-ocean ridges, where tectonic plates are moving apart and new crust is formed through volcanic activity. This process is known as seafloor spreading, and it results in the continuous creation of young oceanic crust.
oceanic crust
At the ridges, where new oceanic crust is created.
The oceanic crust is generally younger than the continental crust. The oceanic crust is continuously being formed at mid-ocean ridges through volcanic activity, while the continental crust is much older and has undergone more complex geological processes over time.
The lithosphere is composed of crust and hard upper mantle. The oceanic lithosphere would be hard upper mantle and basaltic oceanic crust.
The lithosphere is composed of crust and hard upper mantle. The oceanic lithosphere would be hard upper mantle and basaltic oceanic crust.
The average density of oceanic crust is about 2.9 g/cm^3. Given that oceanic crust is typically around 7 km thick, the weight of a cubic meter of oceanic crust would be approximately 29,000 kg (or 29 metric tons).
Of course it's continental crust! If it were made of oceanic crust, it would be underwater or some large island starting at the bottom of the ocean floor!
I believe this would be the oceanic crust
I believe this would be the oceanic crust
Continental crust is less dense than oceanic crust, so it floats higher on the mantle. This means that the same thickness of continental crust will displace less mantle compared to oceanic crust. Additionally, continental crust is composed of lighter rocks like granites, while oceanic crust is made of denser rocks like basalt.
Oceanic crust is created at mid-ocean ridges and (through the creation of new oceanic crust) is pushed toward a convergent plate boundary where it is subducted. So the oldest oceanic crust would be located at a convergent plate boundary where the oceanic crust is being subducted under continental crust.