Where do volcanoes form new crust?

Volcanoes form new crust primarily at divergent tectonic plate boundaries, where plates are pulling apart, such as mid-ocean ridges. Here, magma rises from the mantle to fill the gap, solidifying as it cools to create new oceanic crust. Additionally, volcanoes can also form at convergent boundaries, where one plate subducts beneath another, leading to volcanic arcs that release magma as new crust is formed. In both cases, the volcanic activity contributes to the ongoing cycle of crust formation and recycling.