The aeromagnetic anomalies of the oceanic crust northeast of Newfoundland, Canada, are stronglys kewed, with an anomalous skewness of 33--52¿, with respect to theanomalies calculated using the standard sea-floor spreading model. This paper examines the possibility that the anomalous skewness is on account of an oceanic crust with a thermo-viscous remanent magnetization, where -unllike the standard model- the lower crust is magnetic. The thermo-viscous remanent magnetization of the lower crust beneath the labrador Sea has dominant contributions to broadd-scale marine magnetic anomalies and to the negative Magsat Anomaly of the Sea. ¿ American Geophysical Union 1990