BUSCADOR RECOLECTA

CRESCENT-1 Cruise (29HE19940930) carried out on the Research Vessel Hespérides in 1994, Morphostructural control of sedimentary record and current sediment transfer in the Central-Eastern Atlantic: Agadir canyon and Hierro Island 1) Study in detail the morpho structure of the Agadir Canyon, with special incidence in the transition area between the mouth of the canyon and the channel and the channel of the turbiditic system, determining the morphology, geometry, stratigraphy and nature of the associated deposits. 2) Study the current sedimentary activity in the submarine canyons and the geological processes. The effect of current dynamic processes on the sedimentary record will be evaluated by analyzing the impact that similar processes could have had in the past. 3) Map the areas of sedimentary instability and establish the relative importance of the instability processes as modeling modifying agents in the morph-structure of the slope, base-slope and basin. 4) Establish relations between the processes of canalized transport, sedimentary instability and mass landslides, and the development of deposits of "debris flows" or turbidites in slopes and basins. Determine the factors - changes in sea level, seismic and / or volcanic activity, which control this interaction. 5) Assign the chronology of the seismic reflectors in the high resolution seismic profiles of BPS based on the chrono-stratigraphic units of the DSDP Sites. 415, 416 in the area of ​​the Agadir basin

CRESCENT-2 Cruise (29HE19941204) carried out on the Research Vessel Hespérides in 1994, Morphostructural control of the sedimentary record and current transfer of sediment in the Central-Eastern Atlantic: Agadir canyon and Isla del Hierro (CRESCENT) 1) Transport and / or sediment accumulation through non-channeled areas - submarine landslides 2) The role developed by large-scale submarine landslides in the modification of the relief in the slope and base areas of the slope and especially in the geological evolution of volcanic islands. 3) Establish a detailed bathymetry of the slopes that surround the island of El Hierro that will allow to delimit the deposits of debris resulting from the possible landslides. 4) Map the areas of sedimentary instabilities and establish the relative importance of the instability processes as modifying agents of the slope modeling and slope base of volcanic islands. 5) Establish the possible alternation of periods of stability and instability that will allow stratigraphically relate the development of these landslides in relation to other active sedimentary processes in the region and even with past volcanic eruptions (vulcano-sedimentary deposits) 6) Reconstruct the recent kinematic evolution of the eastern-central Atlantic basin and its possible comparison with the conjugated atlantic margin and with other nearby margins, including the characterization of pre-sin and post-rift sediments, and comparison with other well-studied and relatively close passive margins (margin of Galicia) 7) Perform a geological and geophysical mapping through the magnetism and gravimetry data, to know the current and deep structure of the basement (oceanic crust of the Central Atlantic) 8) Comparative study of the volcano-tectonic processes (magmatic flows ) and possible submarine hydrothermalism associated with the formation n of the Isla del Hierro, located in a particular context of interplaca volcanism ("hot spot")