Seafloor Spreading

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Across
  1. 1. Present day magnetism.
  2. 5. The type of rock paleomagnetism relies on.
  3. 8. Convection currents rotating in opposite?
Down
  1. 2. Magnetic North Pole becomes South Pole.
  2. 3. The study of ancient magnetism.
  3. 4. What type of boundary is the Mid-Atlantic Ridge?
  4. 6. When oceanic crust sinks back down into mantle.
  5. 7. What boundary type forms a deep-sea trench?