The age of material on a tectonic plate depends in part on what type of crust it is composed of.

Question

Oceanic crust, or ocean floor or Continental crust
tends to be younger because it is continually produced at the
hot spots or mid-oceanic ridges or deep sea vents
and then recycled. On the other hand,
continental crust, or oceanic crust, or oeacn floor
tends to be older because it can often remain intact for longer periods.

Answer 1

The age of material on a tectonic plate depends in part on what type of crust it is composed of. Oceanic crust tends to be younger because it is continually produced at the mid-oceanic ridges and then recycled. On the other hand, continental crust tends to be older because it can often remain intact for longer periods.