Yes, oceanic plates and continental plates are colliding all over the world. This is a very common phenomenon that leads to the formation of some of the Earth's most dramatic features.

Here's why this happens and what it results in:

* Density Differences: Oceanic plates are denser than continental plates.

* Subduction: When they collide, the denser oceanic plate is forced beneath the continental plate. This process is called subduction.

* Consequences of Subduction:

* Volcanoes: The subducted oceanic plate melts as it sinks deeper into the mantle. This molten rock rises to the surface, creating volcanic arcs along the edge of the continent.

* Earthquakes: The collision and movement of these plates create immense pressure, resulting in frequent and powerful earthquakes.

* Mountain Ranges: The pressure from the collision also causes the continental plate to buckle and fold, creating mountain ranges.

Examples of Oceanic-Continental Collisions:

* The Andes Mountains (South America): The Nazca Plate (oceanic) is subducting beneath the South American Plate (continental), forming the Andes Mountains and volcanoes like Mount Cotopaxi.

* The Cascade Range (North America): The Juan de Fuca Plate (oceanic) is subducting beneath the North American Plate (continental), creating the Cascade Range and volcanoes like Mount Rainier.

* The Himalayas (Asia): While the Indian Plate (continental) is colliding with the Eurasian Plate (continental), the initial collision involved an oceanic plate that was subducted beneath the Eurasian Plate. This process ultimately led to the formation of the Himalayas.

Let me know if you'd like to learn more about any of these examples!