CADISED – Sediment depocentres in the northern Gulf of Cadiz

CADISED

Locally confined sediment depocenters on the northern Gulf of Cadiz shelf: formation history, environmental changes, and budget calculation.

Local sedimentary depocenters on clastic continental shelves contain highly valuable information concerning their history of development, the dynamics of component-specific sediment distribution in the shelf system, and the variability of climate-related parameters such as sea level and continental sediment supply. The existing seismo-acoustic profiles from the northern Gulf of Cadiz shelf system show a number of well-defined transgressive and Holocene sediment bodies. Such deposits are highly suited for palaeo-environmental reconstructions. We thus want to get benefit from these depocenters, and the three superordinate scientific targets are:

- To develop a comprehensive sedimentary-stratigraphic model on the origin of confined shelf deposits;

- To broaden the poor knowledge on sedimentary depocenters with special emphasis on their development dynamics and to calculate, as the most significant aspect, a marginal-marine sediment budget along defined time slices for late-glacial, deglacial and Holocene times.

- To use Holocene highstand muddy depocenters as high-resolution palaeo-environmental archives with the aim to reconstruct past climatic variability at high resolution in a regional (and Atlantic-wide) context and to quantify the influence of the involved forces (oceanography, morphology, material input, neotectonics).

Collaboration:

Faculty of Geosciences, University of Bremen, Germany

Instituto Andaluz de Ciencias de la Tierra, Granada, Spain

Instituto Geológico y Minero de España/Spanish Geological Survey, Spain

Centro de Investigação Marinha e Ambiental, Universidade do Algarve, Faro, Portugal