Vertical motions

Vertical motions

. The surface features on Venus have been formed by vertical, up and down motions driven by molten rock welling up from the planet's interior. When rising bubbles of hot rock press against the crust, they can form domed, cracked features known as coronae. Larger rising plumes support many of the highlands of Venus, while sinking regions can lead to mountain formation. When the molten rock breaks through the surface it forms towering volcanoes.

Copyright 2010, Professor Kenneth R. Lang, Tufts University