BUSCADOR RECOLECTA

GEBRAP Cruise (29HE19961203) carried out on the Research Vessel Hespérides in 1996, Geological evolution of the Pacific margin of West Antarctica: Seafloor spreading and Plate Tectonics. Objectives of the campaign: 1) Morphostructural study of the sectors of the Bransfield Basin, and surroundings, not previously investigated by means equivalent to those that equip the BIO Hesperides, with special attention to submarine volcanism and its relationship with the segmentation and evolution of geodynamics of the basin. 2) Morphostructural investigation of the collision between the extinct dorsal of the Drake's Plate and the South Shetland Trench, and between the trench and the main fracture zones. 3) Contribution of new elements for the knowledge of the evolution of the Pacific margin of the Antarctic Peninsula in its structural, sedimentary, and chronological components. 4) Detailed analysis of the morphology and internal structure of the sedimentary bodies and erosive forms of the Pacific margin of the Antarctic Peninsula, in the northern Bellinghausen Sea. 5) Contribution to the improvement of seismic stratigraphy models in glacial-marine contexts. 6) Characterization of the petrology and the age of the volcanic buildings of the Bransfield Basin. 7) Determination of detail morphology and sedimentary fill along the axis of Gerlache Strait. 8) Investigation of the morphology of detail, the structure and sedimentary coating on the continental shelf of the King Jorge Island. 9) Study of deep-seated benthic organisms. 10) Estimation of krill biomass