Cartoon showing the subduction of an oceanic plate under a continental plate. Sidescan of ocean floor off Vancouver Island.
Image is from a scanning electron microscope.
The stippled lines indicate in schematic fashion the dip and the frequency of seismic reflections. Dark blue lines denote seismic reflection profiles and the dashed red line shows the northern limit of sedimentary cover. White lines denote seismic reflection profiles. The Slave-Rae collision. White lines show seismic reflection profiles.