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Belt Basin

geology

Learn about this topic in these articles:

geologic history of North America

  • North America
    In North America: 1.6 to 1.3 billion years ago

    The Belt Basin, centred in Idaho and western Montana, contains large base-metal ore bodies embedded in sediments up to 12 miles (19 km) thick. It originated as an enclosed basin floored by highly stretched continental crust or trapped oceanic crust, which is analogous to the structure…

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