and passive continental margins. These cross sections (or vertical
slices) through the Earth illustrate the differences between active (top)
and passive (bottom) continental margins. A continental margin is the boundary
between continental and oceanic crust. In the top diagram, it occurs at
the trench, the topographic feature marking a convergent plate boundary.
In the bottom diagram, the continental margin occurs below the continental
slope. NJ is situated on a passive margin. The part of the cross section
below from "rift basin" and to the right is very similar to the actual
geology of the NJ continental margin.