12 documents found, page 1 of 2
Factors controlling rare earth element plus yttrium enrichment in Fe–Mn crusts ...
Marino, Egidio; Gonzalez, Javier; Khun, Thomas; Madureira, Pedro; Somoza, Luis; Medialdea, Teresa; Lobato, A.; Miguel, C.; Reyes, J.; Oeserf, M.Marine minerals are important because concentrate in their structure high contents of strategic and critical elements as rare earth elements. Forty-two samples from eight seamounts of Canary Islands Seamount Province (CISP) have been analyzed in order to evaluate their rare earth elements plus yttrium contents (REY). Highest contents of REY are related to hydrogenetic minerals and essentially Fe-vernadite (on a...
Mineralogy and Geochemistry of High-Temperature Cu-rich Hydrothermal Chimneys f...
González, Javier; Somoza, Luis; Medialdea, Teresa; Santofimia, Ester; Rincón-Tomás, Bianca; Marques, Filipa; Pinto Ribeiro, Luísa; Calado, AntónioThe Moytirra hydrothermal vent field is located on the Mid-Atlantic Ridge (MAR) at approximately 45°N, between the Azores and Iceland. This system was discovered in 2011 during an Irish-led scientific expedition aboard the RV Celtic Explorer, and was later extensively explored and sampled in 2019 by the Spanish EXPLOSEA 2 expedition aboard the RV Sarmiento de Gamboa, with the support of the remotely operated ve...
Multidisciplinary Scientific Cruise to the Northern Mid-Atlantic Ridge and Azor...
Somoza, Luis; Medialdea, Teresa; González, Javier; Calado, António; Afonso, Andreia; Albuquerque, Mónica; Bettencourt, Renato; Blasco, IkerThis work presents the preliminary result of the multidisciplinary cruise EXPLOSEA2 surveying the northern Mid-Atlantic Ridge and Azores Archipelago from 46 300 N to 38 300 N aboard the R/V Sarmiento de Gamboa and ROV Luso over 54 days (June 11 to July 27, 2019). In this cruise report, we detail the geophysical, hydrographic, geological, oceanographic, ecological, and microbiological data acquired and a brief o...
The Interactive Role of Hydrocarbon Seeps, Hydrothermal Vents and Intermediate ...
Somoza, Luis; Rueda, José; Sanchez-Guillamón, Olga; Medialdea, Teresa; Rincón-Tomás, Blanca; González, Francisco; Palomino, Desirée; Madureira, PedroIn this work, we integrate five case studies harboring vulnerable deep-sea benthic habitats in different geological settings from mid latitude NE Atlantic Ocean (24–42º N). Data and images of specific deep-sea habitats were acquired with Remoted Operated Vehicle (ROV) sensors (temperature, salinity, potential density, O2, CO2, and CH4). Besides documenting some key vulnerable deep-sea habitats, this study shows...
High-resolution multibeam bathymetry of the northern Mid-Atlantic Ridge at 45–4...
Somoza, Luis; Medialdea, Teresa; González, Javier; Marchancoses, Sara; Candón, Jose; Cid, Constantino; Calado, António; Afonso, AndreiaThis work presents a new high-resolution multibeam bathymetric map of a segment of active deep sea-floor spreading in the Atlantic Ocean, the northern Mid-Atlantic Ridge (MAR) at 45–46º N. New high-resolution bathymetry data were acquired using an Atlas multibeam echosounder onboard the research vessel Sarmiento de Gamboa during the EXPLOSEA-2 survey in 2019. The final map of the MAR (50 m cell grid size) at th...
Low-temperature, shallow-water hydrothermal vent mineralization following the r...
González, Javier; Rincón-Tomás, Blanca; Somoza, Luis; Santofimia, Esther; Medialdea, Teresa; Madureira, Pedro; López-Pamo, Enrique; Hein, JamesHydrothermal iron (Fe)-rich sediments were recovered from the Tagoro underwater volcano (Central Atlantic) that formed during the 2011–2012 volcanic event. Cruises in 2012 and 2014 enabled the monitoring and sampling of the early-stage establishment of a hydrothermal system. Degassing vents produced acoustic flares imaged on echo-sounders in June 2012, four months after the eruption. A novel hydrothermal vent s...
GeoERA Raw Materials Monograph : the past and the future
Wittenberg, Antje; de Oliveira, Daniel Pipa Soares; Flindt Jørgensen, Lisbeth; González, Javier; Heldal, Tom; Aasly, Kari Aslaksen; Deady, EimearABSTRACT: GeoERA Minerals projects have produced data aimed at supporting Europe’s minerals sector and to assist the European Commission to realise its goals for raw materials. Data has been compiled on mineral occurrences and mineral provinces across Europe, in particular, areas with potential to host Critical Raw Materials. Anecdotal evidence from the minerals sector provides an indication of the likelihood o...
Outlining the cobalt and phosphor exploration potential areas and mineralisatio...
Sadeghi, Martiya; Bertrand, Guillaume; González, Francisco Javier; de Oliveira, Daniel Pipa Soares; Pereira, Aurete; Quental, Lídia; Decree, SophieABSTRACT: One of the primary goals in FRAME project’s WP3 (Critical and Strategic Raw Materials Map of Europe), in collaboration with other work packages of FRAME and other GeoERA projects, is to produce and present the mineralisation and potential areas for CRM in Europe. Identifying new resources of supply critical mineral potential on land and in the European seabed for CRM needed for energy transition, is c...
Integrated thematic geological mapping of the Atlantic Margin of Iberia.
Terrinha, Pedro; Medialdea, Teresa; Batista, Luís; Somoza, Luis; Magalhães, Vítor; González, Francisco Javier; Noiva, João; Lobato, Ana; Rosa, MarcosThis paper synthesizes the geology of the Atlantic Margin off the coast of Iberia and surrounding Abyssal Plains using published thematic mapping freely downloadable from EMODNET-Geology portal at different scales. Selected information was chosen in order to highlight mineral occurrences and natural hazards overlaid on geological and morphological maps. Altogether, this information is published and interpreted ...
Hydrogenetic, Diagenetic and Hydrothermal Processes Forming Ferromanganese Crus...
Marino, Egidio; Gonzaléz, Francisco; Kuhn, Thomas; Madureira, Pedro; Wegorzewski, Anna; Mirão, José; Medialdea, Teresa; Oeser, Martin; Miguel, CatarinaFour pure hydrogenetic, mixed hydrogenetic-diagenetic and hydrogenetic-hydrothermal Fe-Mn Crusts from the Canary Islands Seamount Province have been studied by Micro X-Ray Diffraction, Raman and Fourier-transform infrared spectroscopy together with high resolution Electron Probe Micro Analyzer and Laser Ablation Inductively Coupled Plasma Mass Spectrometry in order to find the correlation of mineralogy and geoc...