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The only visible parts of the Midcontinent Rift, mostly outcrops of basalt such as the one pictured, are in the Lake Superior region. . |…
When you buy through links on our articles, Future and its syndication partners may earn a commission.
The only visible parts of the Midcontinent Rift, mostly outcrops of basalt such as the one pictured, are in the Lake Superior region. . |…