The grain size determination unit is equipped with a SediGraph 5100 analyzer combined with a MasterTech 51 automatic sampler that allows determination of particle size in different types of sediment or particulate matter. Determination is carried out by the sedimentation method following Stokes law. The SediGraph 5100 uses a low energy collimating X-Ray beam to mesure the sedimentation rate of each particle. The best results are obtained for the clay, silt or fine sand fractions. The whole system is automatized, so that the samples are introduced into the mixing chamber and the analytical process is programmed from the computer atached. All parameters, including the Reynolds number, are determinated automatically, thus eliminating the errors caused by manual introduction comomonly used in other systems.
- Processing of geophysical data (multichannel and monochannel seismic profiles, gravimetric and magnetic profiles).
- Interpretation of seismic profiles 2D and seismic profiles 3D.
- Design and drawing of figures and maps.
- Automatic hydraulic press (MIGNON S, NANNETTI), to prepare pressed pellets.
- Fusion machine (Vulcan 4M, FLUXANA-HD-ELEKTRONIK), to prepare fused beads.
- Precision Balance (GF-200, AND)
The scientific illustration service provides designs and drawings in support of publications made by the scientific personnel. Such materials can be used in congresses, conferences and to illustrate teaching activities.
The scientific tasks undertaken include:
- Visualizing, processing and interpretation of bathymetry data, obtained using multibean probes. Software: Fledermaus, Caraibes, Caris.
- Digitizing of seismic profiles, using analogical scanning of profiles and conversion to digital formats (eg. segy). Software: Lynx.
- Procesing of geophysical marine data , such as (multichannel and monochannel) seismic profiles, gravimetric and magnetic data. Software: Promax, RadExpro, SeismicUnix.
- Structural analysis of geological sections, section balancing, decompacting, section retistution and prolongation in depth of surface data. Software: 2DMove.
- Seismic and well data interpretation.
This laboratory is used for sample preparation, in particular for preparation of fused beads and pressed pellets of powdered samples for X ray Fluorescence analyses, for digestion of samples for analysis by atomic absorption (AA), Inductively coupled plasma mass spectrometry (ICP-MS) and Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES), and for mineral separation by sequential chemical leaching.
Its equipment includes and experiment table with two electric motors connected to mobile boards with variable speeds of 0.2 to 10 cm/hour. Multiple experimental set-ups are possible (compression, extension, slip and combinations of same). Several digital cameras record the progressive deformation in the experiments
The analogical materials used and calibrated to date are:
- Glass microspheres.
A Struers Planopol – V polishing wheel, a Microtec automatic thin sectioning system, a Petro-Thin sectioning system by Buehler, two microscopes (one transmitted, the other reflected light), complementary apparatus, etc.
This laboratory prepares:
- Thin sections, polished thin sections and polished blocks for study using transmitted and reflected light microscopy and electronic microprobe, transmission electron microscopy and laser ablation.
- Doubly polished sections are also prepared for study of fluid inclusions.
- Sections and blocks of mineral concentrates are also prepared.
The clay mineralogy laboratory prepares samples for analysis by X-Ray diffraction. The most common activities are grinding in agat mortars to prepare powder samples for study of their total mineralogical composition, and separation of the < 2 mµ fraction. The latter is carried out by acid leaching of samples followed by centrifuging. The laboratory is equipped with balances, stoves, ovens, centrifuges and all other necesary apparatus.