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#seafloor spreading #plate tectonics #divergent boundary #continental drift #mid ocean ridge #oceanic plate

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#plate tectonics #seafloor spreading #earth science #continent movement #landmass separation

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#seafloor spreading #oceanic crust age #geological time #plate tectonics #mid ocean ridge #paleomagnetism evidence

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#seafloor spreading #mid ocean ridge #divergent boundary #plate tectonics #oceanography #volcanic activity