A triple junction is a geological point where three tectonic plates meet. These junctions are significant because they can lead to various geological activities, such as earthquakes and volcanic eruptions. The interactions between the plates can create unique landforms and influence the surrounding environment. There are different types of triple junctions, classified based on the movement of the plates involved. For example, a ridge-ridge-ridge junction occurs where three mid-ocean ridges converge, while a ridge-trench-trench junction involves a mid-ocean ridge meeting two oceanic trenches. Understanding these junctions helps scientists study plate tectonics and Earth's geological processes.