RT annotation
T1 Pliocene-Quaternary Deformational Structures in the Eastern Algarve Continental Shelf, Gulf of Cadiz
A1 Luján Martínez, María
A1 Lobo, Francisco José
A1 Mestdagh, Thomas
A1 Vázquez, Juan Tomás
A1 Fernández Puga, María del Carmen
A1 Van Rooij, David
A2 Ciencias de la Tierra
K1 Gulf of Cadiz
K1 continental shelf
K1 Pliocene-Quaternary deformation
K1 seismic stratigraphy
AB 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.
PB Sociedad Geológica de España
SN 0213-683X
YR 2020
FD 2020
LK http://hdl.handle.net/10498/40228
UL http://hdl.handle.net/10498/40228
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026