Evidence of sea-floor spreading

Sea-floor spreading is a key concept in plate tectonics theory, providing significant evidence for the movement of Earth's lithospheric plates. This process occurs at mid-ocean ridges, where new oceanic crust forms through volcanic activity and magma upwelling.

One primary evidence supporting sea-floor spreading is the symmetric pattern of magnetic striping found on either side of mid-ocean ridges. As magma rises from the ______ ________ ____ ______ ____ ______ _________ _________.
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