<Dd> h (t) ∼ h 0 − 350 t (\ displaystyle h (t) \ sim h_ (0) - 350 (\ sqrt (t))) </Dd> <P> for the eastern Pacific Ocean, and: </P> <Dl> <Dd> h (t) ∼ h 0 − 390 t (\ displaystyle h (t) \ sim h_ (0) - 390 (\ sqrt (t))) </Dd> </Dl> <Dd> h (t) ∼ h 0 − 390 t (\ displaystyle h (t) \ sim h_ (0) - 390 (\ sqrt (t))) </Dd>

Where is the only significant land surface on which new crust is being created by rifting