This occurs in a subduction zone.
Ocean floor
The ocean is never pulled under the continent. Oceanic crust--the rock and some sediments, however, slide under the edges of continental crust and are pushed downward toward the mantle in areas of oceanic to continental plate collisions.
An ocean to continent boundary is where the oceanic crust meets the continental crust. This typically occurs at a continental shelf, which is the gently sloping transition between the continent and the ocean floor. This boundary is marked by significant differences in physical and geological characteristics between the two crust types.
Continental Shelf.
new land is formed
Molten meaterial
pie
Slope
Continental Slope
Islands in an ocean don't belong to any continent. If they were part of a continent they wouldn't be islands would they? The African Continent is the continent nearest the Canary Islands, but the islands are the result of volcanic activity on the ocean floor.
A sharp drop from a continent to an ocean basin is called a continental slope. This feature marks the boundary between the continental shelf and the deep ocean floor.
The transition zone between an ocean basin floor and a continent is known as the continental shelf. It is the submerged part of a continent that extends from the shoreline to the continental slope. The continental shelf is characterized by relatively shallow waters and is an area of high biological productivity.