OnShore
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Geosurveys' mission is to provide geophysical solutions using cutting-edge technology. We strive for the right combination of youth, technical excellence and experience, with the ability to choose tools that are tailored to the client's needs.
Methodologies
Ground Penetrating Radar
Georadar is a geophysical method based on the propagation of high frequency electromagnetic waves (25MHz to 2GHz).
It has applicability in several areas, and is usually used in tasks related to:
Geometric characterization of rock masses
Geometric characterization of unconsolidated rocks
Determination of secondary deposits (paleochannels, and others)
Non-destructive inspection (concrete, frames, pipes, and others)
Location of buried structures (deposits, and others)
Mapping and assessment of infrastructures and underground voids
Contamination plume detection
Inspection and characterization of roads and railways
Georesistivity
Electrical resistivity and induced polarization (IP) are geophysical prospecting methods based on measuring the electrical properties of geological formations. Geosurveys use 2D and 3D configurations, reaching investigation depths of up to 1000m (with special configurations).
These methodologies were applied, with proven success in:
Construction
Mining industry
Hydrogeology
Monitoring and inspection
Others
Among the various methods, the following stand out:
Wenner and Gradient Configuration, Schlumberger, Dipole-Dipole, Pole-Pole, Pole-Dipole, Multigradient, among other geometries
Vertical electrical soundings (1D VES)
Polar and dipolar tomography (2D and 3D)
Mapping the spontaneous potential
Induced polarization/metallic factor (2D and 3D)
Seismic methods
The application areas of high-resolution refraction seismic and MASW techniques are vast and we can offer solutions for:
Civil construction and geotechnics with high resolution information at depths of up to 200m. Tailor-made solutions for ripability studies on roads or railways, studies for the design of foundations of large structures (dams, bridges)
Mining industry – Geological, geophysical, stratigraphic and structural definition of rocky bodies, faults, massifs, and others
MASW/MAM techniques also allow:
Velocity models (S waves) 1D and 2D, and Vs30 site characterization
Estimation of P-wave velocity models
Shear modulus (G0)
Poisson coefficient
Density (estimated)
Vp/Vs
Young's Modulus
Geosurveys also has equipment to perform seismic tests in drilling holes, also known as Downhole and Crosshole.
Thermal conductivity and thermography
Geosurveys has technicians and equipment to carry out analyzes of temperature variations, whether by characterizing the thermal conductivity of materials, or by thermographic cameras, for remote detection of different bodies.
Geosurveys also has technology to carry out temporal evolution studies and determine thermal gradients (heating rates or cooling rates).
Magnetometry and magnetic gradiometry
For mapping magnetic anomalies (resource mapping, identification of UXO's or others), Geosurveys has advanced techniques in:
Classical magnetometry
Gradiometry
Transient electromagnetic induction
These methodologies have applicability in various fields (construction, mining industry, and others)
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Geosurveys (2024)