Understanding the origin of the Hudson Fan Magnetic Anomaly Highs (HFMAH) on the Eastern North American Margin (ENAM) has implications for the rifting processes that formed the Atlantic seafloor. The origin and implications of HFMAH were explored in this research using magnetic forward modeling based on newly acquired high-resolution sea surface magnetic anomaly data with multi-channel seismic (MCS) for a source geometry constraint. The modeling results show that the two peaks of the HFMAH are reproducible by two highly magnetized bodies in the crust, the locations of which coincide with two zones of rough basement topography observed in MCS. It is proposed that the HFMAH is due to the crust emplaced by a propagating rift that accommodated rapid changes in directions and spreading rates during the very early stage of the Atlantic opening that formed the ENAM.
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