A5009824220- Geological and Geophysical Studies Worldwide
- Archaeological and Geological Studies
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Archaeological and Historical Studies
- Clay minerals and soil interactions
- Geological and Tectonic Studies in Latin America
- Geochemistry and Elemental Analysis
- Groundwater and Isotope Geochemistry
- Geology and Paleoclimatology Research
- Mine drainage and remediation techniques
- Environmental and Ecological Studies
- Paleontology and Stratigraphy of Fossils
- Medieval Architecture and Archaeology
- Building materials and conservation
- High-pressure geophysics and materials
- Karst Systems and Hydrogeology
- Polymer Nanocomposites and Properties
- Water Resource Management and Quality
- Therapeutic Uses of Natural Elements
- biodegradable polymer synthesis and properties
- Historical and socio-economic studies of Spain and related regions
- Heavy metals in environment
- Metal Extraction and Bioleaching
- Cultural Heritage Materials Analysis
Universidad de Jaén
2014-2024
Universidad de Granada
1993-1994
University of Almería
1994
The El Teniente copper-molybdenum deposit is hosted by the late Miocene Mafic Complex, a largely subvolcanic package of primarily basaltic-andesite porphyry sills and stocks that were emplaced within mid-late Farellones Formation.In Miocene-Pliocene, series intermediate felsic plutons intruded into Complex.These are spatially associated with magmatichydrothermal breccias multiple vein types form individual mineralized complexes.Here we present detailed observations on mineralogy, textures,...
This research investigates the influence of water composition, presence seasonal algal mats, detrital inputs and activity microorganisms on crystallization aragonite in sediments deposited hypersaline Laguna Honda wetland (S Spain). The high alkaline waters (pH > 9.2 C.E. 70 mS/cm) lake are rich SO42− (>24,000 mg/l), Cl− (>21,000 Na+ (>11,000 mg/l) Mg2+ (>8400 Ca2+ (>1000 supersaturated for dolomite, calcite aragonite. Sediments have lower pH values than column waters, oscillating from 8.54...
Illite-rich sediments from the Laguna Honda wetland, an eutrophicated hypersaline wetland with waters enriched in Mg and Ca surrounded by olive groves Guadalquivir Basin River (South Spain), are polluted elevated concentrations of gold (up to 21.9 ppm) due agricultural practices. The highest contents appear shore lake, where up 20 µm homoaggregates fused nanoparticles (AuNp) found. Small nanoaggregates six very few isolated around 1 nm size can also be observed form heteroaggregates...
Abstract. This research investigates the influence of seasonal hydroclimate variability on triple oxygen and hydrogen isotope composition small, shallow lake systems that show substantial intra-annual interannual fluctuations in water level. The study was conducted at Laguna Honda, a semi-permanent located semiarid Mediterranean environment southern Spain. Over 1 year, level monitored continuously samples from northern margin were taken monthly for major ion concentration analyses. period,...
Abstract The clay mineralogy of fault gouges has important implications for the frictional properties faults, often identified as a major factor contributing to profound weakness. This work compares strength group Mg‐rich minerals common in Mg‐Al‐Si‐O compositional space (talc, saponite, sepiolite, and palygorskite) by conducting triaxial tests with water or argon pore fluid. studied are chemically similar but differ their crystallographic structure. Results show that fibrous phyllosilicates...
Glauconite and Ca phosphate peloids occur in Jurassic Cretaceous bioclastic carbonate rocks from pelagic swell sequences of the Algayat-Crevillente Unit (Subbetic Zone). The size morphology are controlled by bioclasts. glauconite both stratigraphic positions is K rich (>0.69 atoms p.f.u.) shows well-defined 10 Aa lattice fringes. Poorly crystalline areas with a composition Fe-smectite found within peloids, indicating nature glauconitic precursor. This precursor would be formed shielded...
Abstract We have carried out optical microscopy, X-ray diffraction (XRD) and scanning transmission electron microscopy (SEM TEM) studies of phyllosilicates from black slates very low to low-grade metamorphism. Such belong a Middle/Late Devonian basin an Early Carboniferous associated with the Porto–Tomar–Ferreira do Alentejo strike-slip shear zone (Ossa-Morena Zone, Portuguese Iberian Variscan Massif). These are imbricated in Upper Proterozoic substratum higher metamorphic grade. Kübler...
Geochemical changes and authigenic clays were detected in the fault rocks of Padul Fault. An enrichment from protolith to ultracataclasites Si, Al, Fe, Ca, Ti also Zn but an impoverishment Mg was detected. Although (dolostones) are mostly composed carbonates, characterized by presence fine-grained matrix (mainly chlorite Mg-rich biotite, smectite punctually talc). Neither nor talc protolith. The application thermometry gives temperatures around 140–220 °C for chlorites lamellae located on...
We have studied damage zones of two active faults, Baza and Padul faults in Guadix-Baza Granada basins, respectively, South Spain. Mineral microstructural characterization by X-ray diffraction field emission electron microscopy studies been combined with structural fieldwork situ measurements rock properties (permeability Young’s modulus) to find out the relation between deformation behavior, mineral processes, changes soft sediment produced fluid flow during seismic cycles. Our results show...