Iapetus Ocean
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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.
Taconic orogeny
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The Taconic orogeny was a mountain building period that ended 440 million years ago and affected most of modern-day New England. A great mountain chain formed from Eastern Canada down through what is
Iapetus Ocean
…was in the Southern Hemisphere, between the paleocontinents of Laurentia, Baltica and Avalonia. The ocean disappeared with the Acadian, Caledonian and Taconic orogenies, when these three continents joined to form one big landmass called Euramerica. The "southern" Iapetus Ocean has been proposed to have closed…
The "Taconic Unconformity" is an angular unconformity exposed from eastern New York State to the Gaspe peninsula