RT Journal Article
T1 Descripción de las facies presentes en el relleno holoceno del sector externo de la Bahía de Cádiz
T1 Description of the facies within the holocene record of the outer sector of the Cadiz Bay
A1 López Arroyo, J.
A1 Morales González, Juan Antonio
A1 Gutiérrez Mas, José Manuel
AB The Holocene sedimentary evolution in the continental margin of Cadiz Gulf is affected by different factors,which control the nature and distribution of the deposits. The physiography of coast and sea bottomlinked to a hydrodynamic regime controlled by storms and tidal current system control the short termdeposition. The aim of this paper is to study the sedimentary record in terms of facies and facies sequences,so as determine the sedimentary conditions of Cadiz Bay and their evolution during the Holocene.Drilling data were used to know the nature and distribution of the nonconsolidated recent sedimentarydeposits. Thickness distribution shows significant variations related with the infilling of palaeochannels incisedduring the Late Pleistocene lowstand. The sedimentary record presents a succession of facies, having recognized10 main sets of lithofacies, organized in sequences. According to the sedimentary record and to the prevalentdynamic process, the area has been divided in four different sectors. The first and second ones are respectivelycharacterized by sequences of gravels (generated by storm relaxation currents) to muddy sand (deposited bytidal currents). The third sector is a rocky shoal with a thin gravel cover. A fourth sector is a zone partiallyprotected from waves, due to the presence of the rocky shoal, and its sedimentary infill is constituted bysand and mud generated by the tidal currents, including some gravelly storm layers. The general decrease ofenergy shown by the sedimentary record is interpreted as a result of the decrease of tidal prism of the bayand the deviation of the main outlet currents to the southwest caused by the infilling
PB Sociedad Geológica de España
YR 2005
FD 2005
LK http://hdl.handle.net/10272/8653
UL http://hdl.handle.net/10272/8653
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026