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Paleozoic Erathem
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Paleozoic Erathem

geology and stratigraphy

Learn about this topic in these articles:

geology of North America

  • North America
    In North America: Paleozoic orogenic belts

    Erosional remnants of ancient mountain ranges occur along the eastern, northern, and southern margins of the continent. The mountains were formed mainly between 400 and 300 million years ago, when North America collided with other continents to form the ancient supercontinent of…

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