Magnetic anomaly deep within Earth’s crust reveals Africa in North America

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The repeated cycles of plate tectonics that have led to collision and assembly of large supercontinents and their breakup and formation of new ocean basins have produced continents that are collages of bits and pieces of other continents. Figuring out the origin and make-up of continental crust formed and modified by these tectonic events is vital to understanding Earth's geology and is important for many applied fields, such as oil, gas, and gold exploration....
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