Deep crustal structure and continent-ocean boundary along the Galicia continental margin (NW Iberia)
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AuthorsDruet, M.; Muñoz-Martín, A,; Carbó, A.; Acosta-Yepes, J. (Juan); Granja-Bruña, J.L.; Llanes, P.; Vázquez, J.T. (Juan Tomás); Ercilla, G.
The Galicia continental margin is a magma-poor rifted margin with an extremely complex structure. Its formation involves several rifting episodes during the Mesozoic in the vicinity of a ridge triple junction, which produces a change in the orientation of the main structures. In addition, there is an overimposed Cenozoic partial tectonic inversion along its northern border. Although this continental margin has been widely studied since the 70’s, most studies have focused on its western part in the transition to the Iberia Abyssal Plain, and there is a significant lack of information on the north and northwestern flanks of this margin. This fact, along with its great structural complexity, has resulted in the absence of a previous comprehensive regional geodynamic model integrating all the processes observed. In the present study we integrate a large volume of new geophysical data (gravity, swath bathymetry and 2D multichannel reflection seismic). Data come from the systematic mapping ...
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