Over the past 3.96 billion years the earth has gone through a series of geologic changes, some of which have affected the formation of what is now known as the continent of North America. ... Through tectonic processes North America has been built and shaped. The geologic evolution continues to change as we learn more about its formation.
The structure of the earth comes from three major geologic regions, which formed North America. ...
The second geologic region, which formed North America are the mountain chains. ... The Appalachian Mountains were of the first to form in North America. ...
The third region, which formed North America is the continental shelves. ...
Supercontinent Cycles also played a major role in the formation of North America. ... However, North America did not separate the craton that formed during Pangaea I is currently intact.
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