What feature is commonly formed at the divergent boundaries of tectonic plates?

At divergent boundaries of tectonic plates, the primary feature that is formed is mid-ocean ridges. These underwater mountain ranges develop as tectonic plates move apart, allowing magma from the mantle to rise and solidify at the surface. As the plates continue to separate, the magma creates new oceanic crust, contributing to the formation of a ridge.

Mid-ocean ridges are characterized by a central rift valley where tectonic activity is most pronounced. As the tectonic plates diverge, this process can lead to significant volcanic activity along the ridge due to the upwelling of magma, contributing to the creation of new seafloor. The structure and dynamics of mid-ocean ridges also play a crucial role in oceanic and global tectonic systems, influencing geological processes such as sea-floor spreading.

While other features like mountains and volcanoes can occur at different types of boundaries or as a result of other geological processes, they are not typically associated with the divergent boundaries where mid-ocean ridges are formed. Trench systems, on the other hand, are primarily found at convergent plate boundaries, where one plate is being subducted beneath another.