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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
The "Taconic Unconformity" is an angular unconformity exposed from eastern New York State to the Gaspe peninsula
The "Taconic Unconformity" is an angular unconformity exposed from eastern New York State to the Gaspe peninsula
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
Taconic orogeny
…Devonian periods, sediment spread throughout the present-day Appalachians and midcontinental North America. Beginning in Cambrian time, about 550 Ma, the Iapetus Ocean began to close. The weight of accumulating sediments, in addition to compressional forces in the crust, forced the eastern edge of the North American…
Reconstruction of how the Iapetus Ocean and surrounding continents might have been arranged during the late Ediacaran period
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.
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.