A5009145355- Geological and Geophysical Studies Worldwide
- Archaeological and Geological Studies
- Archaeological and Historical Studies
- Mine drainage and remediation techniques
- Geological and Geochemical Analysis
- Metal Extraction and Bioleaching
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- Environmental and Ecological Studies
- Geological and Tectonic Studies in Latin America
- Mining and Resource Management
- Geochemistry and Elemental Analysis
- Geography and Education Methods
- Historical Studies in Science
- Geology and Paleoclimatology Research
- Historical and socio-economic studies of Spain and related regions
- Seismic Waves and Analysis
- Arsenic contamination and mitigation
- Minerals Flotation and Separation Techniques
- Seismic Imaging and Inversion Techniques
- Coal and Its By-products
- Mineralogy and Gemology Studies
- Drilling and Well Engineering
- Heavy metals in environment
- Paleontology and Stratigraphy of Fossils
Universidad de Huelva
2008-2024
IBERSEIS, a 303 km long (20 s) deep seismic reflection profile, was acquired across the Variscan belt in SW Iberian Peninsula. The acquisition parameters were designed to obtain high‐resolution crustal‐scale image of this orogen. profile samples three major tectonic terranes: South Portuguese Zone, Ossa‐Morena and Central which accreted Late Paleozoic times. These terranes show distinctive signature, as do sutures separating them. strike‐slip movements through crustal wedges are apparent...
The Iberian Pyrite Belt (IPB) is recognized as having one of the major concentrations volcanogenic massive sulfide (VMS) deposits on Earth. Original resources about 2000 Mt sulfides have been reported in province. Recent classifications considered IPB bimodal siliciclastic subtype, although differences can be among them. main ones concern hosting rocks. To north, volcanic and volcaniclastic depositional environments predominate, whereas to south, black shale-hosted VMS prevail. mineral...
Zircons found in the stockwork zones of massive sulphide Los Frailes deposit, Iberian Pyrite Belt, are interpreted to have grown during hydro-thermal alteration host felsic volcanic rocks. Ion microprobe (SHRIMP) dating gives a 206 Pb/ 238 U age 345.7 ± 4.6 Ma (2σ) and together with published spore data from deposit suggest an uppermost Devonian lowermost Carboniferous. Stockwork zircons offer possibility precisely defining emplacement ages these giant accumulations over whole Belt this will...
This paper reports the first-ever study on nanoscale mineralogy in pyrite from volcanogenic massive sulfide (VMS) deposits of Iberian Pyrite Belt, southwestern Peninsula. It targeted colloform-textured grains formed at low temperature distal part a polymetallic (Pb-Zn) lens hosted felsic volcanoclastic rocks Masa Valverde deposit, and euhedral-textured (re)-deposited by higher fluids Co-Au rich stockwork black shales Filón Norte orebody Tharsis deposit. The results acquired combination...
Abstract In southwestern Iberia, three continental domains (the South Portuguese Zone (SPZ), Ossa-Morena (OMZ) and Central Iberian (CIZ) collided in Devonian-Carboniferous time. The collision was transpressional, with left-lateral kinematics, interrupted by extensional tectonics during the earliest Carboniferous, when bimodal magmatism (with associated mineral deposits) basin development were dominant orogenic features. Transpression renewed Visean time, persisted until end of Carboniferous....
The Las Cruces deposit is in the eastern end of Iberian Pyrite Belt (SW Spain).It currently being mined by Cobre S.A.The main operation focused on supergene Cu-enriched zone (initial reserves 17.6 Mt @ 6.2% Cu).An Au-Ag-Pb-rich gossan resource (3.6 3.3% Pb, 2.5 g/t Au, and 56.3 Ag) occurs upper part deposit.The Au grade ranges from 0.01 ppm to >100 ppm, as three different ore types: (1) mineralization linked Fe-oxides lithofacies, (2) concentration lower associated with leached black shales,...
AbstractAbstractGossans are the products of intense oxidation massive sulphide deposits exposed at surface. In Filón Sur deposit (Tharsis, Huelva), a detailed petrological and mineralogical study gossan has allowed us to establish distribution abundance main mineral phases in profile. Among these phases, beudantite is present whole profile, although it tends concentrate towards lower part, where this can reach up 40%. Chemical analyses have shown presence significant amounts As Pb structure....
In the present study, experiments in non-saturated leaching columns were conducted to characterize neoformed phases that precipitate at interface between two waste residues having different chemical characteristics: an acid mine drainage producer residue (i.e., pyritic sludge) and acidity neutralizer coal combustion fly ash). A heating source was placed on top of one accelerate oxidation precipitation newly formed phases, thus, observe longer-scale processes. When both are deposited...
With >90 known deposits containing original reserves of >2400 Mt sulfide ore, the Iberian Pyrite Belt (IPB) is largest volcanogenic massive (VMS) province on Earth. In these evolving mineral systems, texturally different pyrite exhibits characteristic mineralogy and trace element fingerprints. (Py-1), which well preserved in polymetallic ores that crystallized at earliest stage VMS deposit formation, consists kernels framboids surrounded by concentric colloform bands ended faceted outlines....