The rifting history of the Atlantic continental margin of Newfoundland is very complex andudso far has been investigated at the crustal scale primarily with the use of 2-D seismic surveys.udWhile informative, the results generated from these surveys cannot easily be interpreted in audregional sense due to their sparse sampling of the margin. A 3-D gravity inversion of the freeudair data over the Newfoundland margin allows us to generate a 3-D density anomaly model thatudcan be compared with the seismic results and used to gain insight into regions lacking seismicudcoverage. Results of the gravity inversion show good correspondence with Moho depths fromudseismic results.Ashallowing of the Moho to 12 km depth is resolved on the shelf at the northernudedge of the Grand Banks, in a region poorly sampled by other methods. Comparisons betweenudsediment thickness and crustal thickness show deviations from local isostatic compensation inudlocations which correlate with faults and rifting trends. Such insights must act as constraintsudfor future palaeoreconstructions of North Atlantic rifting.
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