Earth supercontinents. Artwork showing three of the supercontinents that have formed during the history of the Earth. From top to bottom, and oldest to youngest, they are (dates in brackets): Kenorland (2.7 to 2.1 billion years ago), Rodinia (1.1 billion to 750 million years ago), and Pangea (300 million to 200 million years ago). All three formed when continental drift and plate tectonics brought together most of the Earth's land mass in a single supercontinent. Supercontinents with large land interiors and associated superoceans, can have a marked effect on global and local climate, with powerful monsoons and glaciation.