Avalonia
Videos
Avalonia was a microcontinent in the Paleozoic era. Crustal fragments of this former microcontinent are terranes in parts of the eastern coast of North America: Atlantic Canada, and parts of the East
Current extent of Avalonia highlighted in yellow
Avalonia on its journey to Baltica at 480 Ma (Early Ordovician)
Iapetus Ocean
Videos
The Iapetus Ocean existed in the late Neoproterozoic and early Paleozoic eras of the geologic timescale. It was in the Southern Hemisphere, between the paleocontinents of Laurentia, Baltica and Avalon
Reconstruction of how the Iapetus Ocean and surrounding continents might have been arranged during the late Ediacaran period
Geological fault at Niarbyl. The narrow white diagonal line near centre of picture is where the two sides of the Iapetus Ocean met during its closure. Sutures such as these are the modern evidence for this ancient ocean.