Density.
Older is usually denser.
convergent boundary
Convergent boundary...it's on my homework
because the older crust is pushed out by the newer crust that is forming
Either plates gets subducted which is usually the older plate.
The older. and it should not different from the certificate of encumbrance.
Older material
A destructive plate boundary (usually a subduction zone).
The place where two plates converge is called a convergent boundary. This results in a subduction zone where the heavier oceanic lithosphere is consumed into the mantle.
Continental crust is far older than oceanic crust.
Oceanic crust averages 3 grams per cubic centimeter, Continental crust averages 2.7 grams per cubic centimeter. The difference lies in the rock which composes each type of crust. Oceanic crust is mainly basalt and continental crust is more like granite. Basalt is more dense (heavier) than granite.
The continental crust (one component of the crust) is, on average, much older than the oceanic crust.
Continental crust is far older than oceanic crust.