Convergent Boundary ocean and continental
Below is a picture that I made myself of what goes on during a convergent boundary. Basically what's going on is Oceanic and Continental crust is moving towards each other. Once they hit each other the one that's denser slides under. This process is called Subduction. The type of pressure that is going on at a convergent boundary is compression (--> <--).It is also an actively deforming region where two (or more) tectonic plates or fragments of the lithosphere move toward one another and collide.
Convergent boundary oceanic to oceanic
Convergent Boundary Oceanic to Oceanic
In plate tectonics, a convergent boundary, also known as a destructive plate boundary (because of subduction), is an actively deforming region where two (or more) tectonic plates or fragments of the lithosphere move toward one another and collide.
A tectonic boundary, where two plates are moving away from each other and new crust is forming from magma that rises to the Earth's surface between the two plates.
A transform boundary (or conservative boundary) is where two of the tectonic plates slide alongside each other. When this happens, the scraping of the two plates causes earthquakes.