![]() ![]() The edge of the heavier plate slides, or subducts, below the lighter plate. National Geographic reported on the new data surrounding the subduction zones, and what could happen when the tectonic plates-the large rock slabs that make up the Earth's crust-crash into one another. ![]() Researchers at the University of Lisbon have created a new map of the seafloor, off the coast of Iberia-the region of Europe that includes Portugal and Spain- and the results show the beginnings of a new subduction zone. Scientists have discovered a crack in the Earth's crust that threatens to pull North America and Europe closer together and cause the Atlantic Ocean to vanish in about 220 million years. If the Eurasian plate cracks, the oceanic section will dive beneath the continental section causing the Atlantic Ocean to shrink and pull North America and Iberia closer together
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