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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.
Divergent boundaries are areas where continental or oceanic plates are moving away from each other and creating new crust. Examples would be the Mid-Oceanic Ridge and the East African Rift Zone.
Normal fault.
Continental crust is easier. Continental crust is less dense than oceanic crust, which is made of basalt. (Basalt is very dense.)
two pieces of continental crust meeting at a convergent boundary:) study island 2012
Older material
This would be called a Spreading center, or a divergent plate boundary.
The East African Rift Valley
At a divergent plate boundary, where new crust is created by infilling magma, creating igneous rock.
divergent
it would be more likely to occur at convergent ocean-continental boundary beacuse the rocks are composed with a higher silica and has much thicker continental crust.
You would need to find a continental rift. The best example of an active continental rift is the East African Rift.
divergent boundary
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.
They weld together into new continental crust.
Divergent boundaries are areas where continental or oceanic plates are moving away from each other and creating new crust. Examples would be the Mid-Oceanic Ridge and the East African Rift Zone.
Normal fault.