Artículo
Neotectonics and shoreline history of the Rock of Gibraltar, southern Iberia
Autor/es | Rodríguez Vidal, Joaquín
Cáceres Puro, Luis Miguel Finlayson, J. C. Gracia, F. J. Martínez Aguirre, Aránzazu |
Departamento | Universidad de Sevilla. Departamento de Física Aplicada I |
Fecha de publicación | 2004 |
Fecha de depósito | 2022-09-16 |
Publicado en |
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Resumen | Several sets of staircased Quaternary marine deposits can be observed along the Gibraltar coast ranging from 1 to 210 m above
the present mean sea level. Geomorphological mapping establishes, from the relationship between ... Several sets of staircased Quaternary marine deposits can be observed along the Gibraltar coast ranging from 1 to 210 m above the present mean sea level. Geomorphological mapping establishes, from the relationship between shore, scree and dune sedimentary formations, five main morphotectonic steps on the Rock: marine terraces between 1 and 25 m, 30–60 m, 80–130 m, 180– 210 m, and above. Each terrace level and its slope-aeolian linked sediments is backed by a steep relict sea cliff margin, so forming a composite cliff. The most recent coastal landforms and sediments are associated with the last 250 ka linked to Oxygen Isotope Stages (OIS) 1, 3, 5 and 7. These landforms determine a morphosedimentary highstand-lowstand sequence, with several staircased and offlapped episodes, comprising a major morphotectonic step. A well-developed palaeocliff usually separates the highstand marine terraces of OIS 9 from those of OIS 7. The Gibraltar mean tectonic uplift value of 0.0570.01 mm/yr is maintained from 200 ka to the present. Before this, at least to 250 ka, the mean uplift rate was higher (0.3370.05 mm/yr), possibly compatible with major tectonic events in response to a NNW–SSE compressive stress field between Africa and Iberia. |
Agencias financiadoras | European Union (UE) |
Identificador del proyecto | EU MEDOC Programme: 2002-02-4.1-U-048 |
Cita | Rodríguez Vidal, J., Cáceres Puro, L.M., Finlayson, J.C., Gracia, F.J. y Martínez Aguirre, A. (2004). Neotectonics and shoreline history of the Rock of Gibraltar, southern Iberia. Quaternary Science Reviews, 23 (18-19), 2017-2029. |
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