Rodinia

Uncommon card · No. 92102

In the geological history of Earth, Rodinia (from Russian родина (rodina) 'motherland, birthplace') was a Mesoproterozoic and Neoproterozoic supercontinent that assembled 1.26–0.90 billion years ago (GaTooltip gigaannus) and broke up 750–633 million years ago (Ma). Valentine & Moores (1970) were probably the first to recognise a Precambrian supercontinent, which they named "Pangaea I". It was renamed "Rodinia" by McMenamin & McMenamin (1990), who also were the first to produce a plate reconstruction and propose a temporal framework for the supercontinent. Rodinia formed at c. 1.23 Ga by accretion and collision of fragments produced by breakup of an older supercontinent, Columbia, assembled by global-scale 2.0–1.8 Ga collisional events. Rodinia broke up in the Neoproterozoic, with its continental fragments reassembled to form Pannotia 633–573 Ma. In contrast with Pannotia, little is known about Rodinia's configuration and geodynamic history. Paleomagnetic evidence provides some clues to...

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