%0 Journal Article 
%A Luján Martínez, María
%A Lobo, Francisco José
%A Mestdagh, Thomas
%A Vázquez, Juan Tomás
%A Fernández Puga, María del Carmen
%A Van Rooij, David
%T Pliocene-Quaternary Deformational Structures in the Eastern Algarve Continental Shelf, Gulf of Cadiz
%D 2020
%@ 0213-683X

%U http://hdl.handle.net/10498/40228
%X The eastern Algarve continental shelf in the northern margin of the Gulf of Cadiz has been investigated by analysing a set of high-resolution seismic reflection profiles. We examine the major structural elements affecting the upper sedimentary units. A seismo-stratigraphic interpretation and regional correlation allowed the identification of a major discontinuity that separates two main intervals, pre-Middle Pleistocene (MP) and post-MP. In addition, a number of deformation features such as ENE-WSW to NE-SW thrusts, kilometric-scale N-S to NW-SE folds and NNE-SSW to NNW-SSE sub-vertical normal faults were identified affecting the Pliocene-Quaternary sedimentary record, indicating neotectonic activity. The structures pre-dating MP are in agreement with a dominant transpressive regime along the continental shelf, under the Late Cenozoic NW-SE oblique convergence and related to the reactivation of Mesozoic diapiric structures. The structures post-dating MP induce a lower deformation of the sedimentary cover but were still active during the last glacial maximum, in agreement with the low uplift recognized in the Portuguese mainland.
%K Gulf of Cadiz
%K continental shelf
%K Pliocene-Quaternary deformation
%K seismic stratigraphy
%~ Universidad de Cádiz