ccess Full-fit reconstruction of the Labrador Sea and Baffin Bay

Abstract. Reconstructing the opening of the Labrador Sea and Baffin Bay between Greenland and North America re-mains controversial. Recent seismic data suggest that mag-netic lineations along the margins of the Labrador Sea, orig-inally interpreted as seafloor spreading anomalies, may lie within the crust of the continent–ocean transition. These data also suggest a more seaward extent of continental crust within the Greenland margin near Davis Strait than assumed in previous full-fit reconstructions. Our study focuses on re-constructing the full-fit configuration of Greenland and North America using an approach that considers continental defor-mation in a quantitative manner. We use gravity inversion to map crustal thickness across the conjugate margins, and assimilate observations from available seismic profiles and potential field data to constrain the likely extent of differ