There are three types of convergent plate boundaries. Continent-continent collision. Ocean-Continent convergence. Oceanic-Oceanic convergence. Oceanic crust-Oceanic crust convergence can lead to formation of oceanic volcanic islands. Oceanic-Continent convergence usually leads to the subduction of the oceanic crust. As it descends into the mantle it melts and produces long chains of volcanic peaks such as the Andes, or Cascades. When two continents collide, neither will be recycled into the mantle. Some of the earth highest mountain ranges are formed this way. The mountains may contain ancient sea floor, metamorphic rocks, or sedimentary rocks, but no igneous rocks, as no magma is produced. The exact behavior depends on the mechanical strength an relative density of the plates involved. Ocean crust is thinner and denser than continental crust. What type of plate margin is shown on the following diagram?