= D. H. Matthews
{c}
<D. H. Matthews> and <F. J. Vine> proposed an explanation of marine <magnetic anomalies> that combines <seafloor spreading> with reversals of the geomagnetic field. Newly formed magnetized material moves away from a ridge, preserving a sequence of polarities.<Magnetic Anomalies Over Oceanic Ridges by F. J. Vine and D. H. Matthews>[1963 paper: spreading and magnetic-reversal interpretation]{ref}
The proposal turned magnetic profiles into a test of ocean-floor motion. The measured field also depends on source geometry and observation height, so it is not simply a local polarity reading.
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