<p><strong>Fig. 7.58.</strong> The age of oceanic crust in millions of years. The youngest crust (shown in red) is near mid ocean ridges and spreading zones.</p>

Fig. 7.58. The age of oceanic crust in millions of years. The youngest crust (shown in red) is near mid ocean ridges and spreading zones.

Image courtesy of National Oceanic and Atmospheric Administration (NOAA)