sentence: Most volcanoes are explained by the collision or splitting apart of continental plates.
sentences_after: This explains the long mountain ranges which have many volcanoes, such as the western edge of the Americas. It also explains the huge rift valleys such as the East African Rift Valley. Most Earth scientists accept that the cause of these great features is plate tectonics.
concept_name: volcano
headings: Hotspot (geology) Discussion Standard account of volcanic activity
categories: Geology