RT Journal Article T1 Fisiografía y Geología del umbral del Estrecho de Gibraltar T1 Physiography and Geology of the Gibraltar strait sill A1 Sandoval, N. G. A1 Sanz, J. L. A1 Izquierdo, F. J. AB A first geological submarine map of the Sill of the Gibraltar Strait has been established as a result of the geological and geophysical research of the several oceanographic campaigns covering this area and by the integration of the information collected in the different samplings taken through «gravity cores». The outcrops offlyschs and their probable structure have been recognized (a continuity of the units that form geologically both sides of the Strait exists). Quaternary deposits are mainly composed of non consolidated sediments (sands and bioclastic gravels) in the continental platforms and in deep basins, and the development of calcareous crusts (biocalcarenites) in the central area of the Sill of the Strait, which does not seem very thick, covering and hiding the substrate of the flyschs PB Sociedad Geológica de España YR 1996 FD 1996 LK http://hdl.handle.net/10272/12185 UL http://hdl.handle.net/10272/12185 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026