BUSCADOR RECOLECTA

IBERSEIS is a 303 km long deep seismic reflection profile. The transect was recorded in 56 days (from May to July 2001) using a 400 channel SERCEL 388 and five 22 Ton Vibroseis trucks. The asymmetric split spread configuration changed along the profile according to the dips of outcropping structures. To achieve a high resolution at shallow levels and to image steep dips, a 35 m station spacing and a 70 m Vibration Point interval was used with a high fold (60 in average). A relatively long sweep (20 s) was chosen to increase the source energy rather than increasing the number of sweeps per Vibration Point. The migrated and stack dataset derived from this raw data are available in http://hdl.handle.net/10261/220989, IBERSEIS NI: Migrated and stack files: http://dx.doi.org/10.20350/digitalCSIC/12643 ; http://hdl.handle.net/10261/220989, IBERSEIS Normal Incidence (IBERSEIS-NI) is a NE-SW oriented deep seismic reflection profile that provided for the first time a complete section at crustal scale of the Variscan Iberian Massif in the SW of Spain. This seismic profile samples three major tectonic terranes: the South Portuguese Zone, the Ossa-Morena Zone, and the Central Iberian Zone. These terranes show a distinctive seismic signature, as do the sutures separating them. Late strike-slip movements through crustal wedges are apparent in the seismic image and have strongly modified the geometry of sutures. The upper crust appears to be decoupled from the lower crust all along the seismic line, but some deformation has been accommodated at deeper levels. A sill-like structure is imaged in the middle crust as a 1–2 s thick and 175 km long high-amplitude conspicuous reflective band. It is interpreted as a great intrusion of mafic magma in a mid-crustal decollement. Taking into account surface geological data and the revealed crustal architecture, a tectonic evolution is proposed for SW Iberia which includes transpressional collision interacting during Early Carboniferous with a mantle plume. The Moho can be identified along the entire transect as subhorizontal and located at 10 to 11 s, indicating a 30–35 km average crustal thickness. Its seismic signature changes laterally, being very reflective beneath the South Portuguese Zone and the Central Iberian Zone, but discontinuous and diffuse below the Ossa Morena Zone., Comisión Interministerial de Ciencia y Tecnología-Fondo Europeo de Desarrollo Regional (CICYT-FEDER), 1FD1997-2179/RYEN1.-- Junta de Andalucía.-- ENRESA.-- Swedish Research Council.-- Instituto Geológico y Minero de España.-- Spanish Ministry of Science and Technology, BTE2000-0583-C02-01, BTE2000-3035-E, BTE2000-1490-C02-01, Peer reviewed

IBERSEIS-NI raw data: http://dx.doi.org/10.20350/digitalCSIC/9016 ; http://hdl.handle.net/10261/193954, This is an update of the IBERSEIS Normal Incidence dataset (http://hdl.handle.net/10261/193954). The current version includes the migrated and stack files of the raw data of the IBERSEIS-NI profile., Comisión Interministerial de Ciencia y Tecnología-Fondo Europeo de Desarrollo Regional (CICYT-FEDER), 1FD1997-2179/RYEN1.-- Junta de Andalucía.-- ENRESA.-- Swedish Research Council.-- Instituto Geológico y Minero de España.-- Spanish Ministry of Science and Technology, BTE2000-0583-C02-01, BTE2000-3035-E, BTE2000-1490-C02-01, Peer reviewed

CAÑONES-I Cruise (29GD20010313) carried out on the Research Vessel García del Cid in 2001, Multidisciplinary study of the dynamics of a submarine canyon and its impact on the ecology of the continental margin of the western Mediterranean. 8 anchors with correntimeters and sediment traps will be placed in the area of ​​the Palamos canyon. 46 CTD stations will be made and samples of water will be taken with the rosette of 24 bottles. Doppler transects will be made in navigation

CAÑONES-II Cruise (29GD20010524) carried out on the Research Vessel García del Cid in 2001, Multidisciplinary study of the dynamics of a submarine canyon and its repercussion on the ecology of the continental margin of the North-Western Mediterranean. The 7 anchors with current meters and sediment traps installed in the area of ​​the Palamós canyon during the CAÑONES I campaign will be recovered and will be returned to install. 23 CTD stations will be made and water samples will be taken with the rosette of 12 bottles

CAÑONES-III Cruise (29GD20010710) carried out on the Research Vessel García del Cid in 2001, The eight anchors installed in the last campaign will be removed and will be reinstalled, samples will be made with the maxicorer

CAÑONES-IV Cruise (29GD20011126) carried out on the Research Vessel García del Cid in 2001, This campaign is the end point of the temporary cycle of the anchorages, in which the material must be collected