Egidio Marino

Complutense University of Madrid | UCM · Department of Mineralogy and Crystallography

This study summarizes the compilation and cartographic works of seabed mineral deposit types in pan-European seas developed under the GeoERA-MINDeSEA project. In total , 692 occurrences and 1194 individual mineral samples of volcanogenic massive sulphides and hydrothermal mineralisation; ferromanganese crusts; phosphorites; marine placer deposits;...

Previous studies have addressed the occurrence of Acid Rock Drainage (ARD) affecting La Silva stream due to the generation of large dumps of Middle Ordovician black shales during the construction of a highway close to El Bierzo (León, Spain). This ARD was characterized by sulphated acid waters with high concentration of heavy metals and anomalies i...

Late Pleistocene-Holocene rocks from the western part of Cocos-Nazca Spreading Centre (C-NSC) include ferromanganese crusts that elucidate the geochemistry and mineralogy of a deep-sea geological setting. Six representative Fe-Mn crust samples were studied using petrological methods, such as optical transmitted light microscopy, energy dispersive X...

Contourites are globally-distributed features along continental margins where deep-water masses come across the seafloor; however, the genesis and metal-sources of marine mineral deposits associated with contourite deposits remain largely unknown. Abundant Fe-rich nodules were recovered along the continental margin of the South China Sea, where ext...

The growth of ferromanganese (FeMn) crusts on soft substrates is uncommon. FeMn crusts generally accrete on hard-rock surfaces, where sedimentation rates are low and the rocks free of sediment cover. Here we use X-ray Powder Diffraction, Fourier Transform-Infra Red spectroscopy, Raman spectroscopy, X-ray Computed Micro-Tomography, Scanning Electron...

FRAME started out with very definite objectives that built on previously available data developed in past EU projects (e.g., M4EU, EuRare, ProSUM, PROMINE and SCRREEN). As we fast approach the end of the GeoERA projects, in which FRAME is included, many are the achievements and substantial leaps forward in information gathering, data harmonisation...

In this work, we integrate five case studies harboring vulnerable deep-sea benthic habitats in different geological settings from mid latitude NE Atlantic Ocean (24–42° 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 doc...

Hydrothermal iron (Fe)-rich sediments were recovered from the Tagoro underwater volcano (Central Atlantic) that was built 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 Jun...

This 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...

Four 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 Spec...

Two Fe–Mn crusts among 35 samples, from six seamounts in the Canary Island Seamount Province, were selected as representatives of the endpoint members of two distinct types of genetic processes, i.e., mixed diagenetic/hydrogenetic and purely hydrogenetic. High-resolution analyses pursued the main aim of distinguishing the critical elements and thei...

El desarrollo de la sociedad moderna y el avance en la investigación tecnológica dependen íntimamente de la minería. Éstos están representados por algunos elementos como las tierras raras, el cobalto, el telurio o el platino que son codiciados por los países industrializados por su escasez y por sus propiedades físicas y/o químicas específicas.

Thick ferromanganese (Fe-Mn) crusts from four Cretaceous seamounts (The Paps, Tropic, Echo and Drago) at the southern Canary Island Seamount Province (CISP) in the northeastern tropical Atlantic were recovered along the flanks and summits from 1700 to 3000 m water depths. CISP is composed of > 100 seamounts and submarine hills, is likely the oldest...

En este trabajo se presentan los resultados geoquímicos de dos testigos de gravedad (TG16 y TG18) realizados sobre un cono volcánico-hidrotermal denominado Tenor 1 y ubicado en la Cuenca de Canarias (Atlántico Central NE), durante la campaña oceanográfica SUBVENT_1 (2013). Debido a su situación geográfica, la estructura estudiada es susceptible de...

En la región oceánica de Canarias (Atlántico Central NE), existe un conjunto de más de 100 montes y relieves submarinos elevados hasta 3000 m por encima de los fondos marinos. Estas estructuras están siendo exploradas dado que contienen depósitos minerales de interés científico y económico (Manzanares et al., 2013; González et al., 2014; 2015; Mari...

New data and discoveries of marine Co-rich ferromanganese deposits from the Canary Islands recovered during the DRAGO 2011, SUBVENT 2013 and SUBVENT 2014 cruises are reported. These mineral deposits coat seamounts and submarine volcanoes from the southwest of the Canary Archipelago (Lat. 23º-27ºN). The volcanic rocks are largely covered with ferrom...