Geophysics

Non-invasive subsurface imaging. Our surveys detect mineralisation, geological structures and aquifers, whether ground-based, downhole or airborne by UAV.

Magnetic Surveys
Resistivity & Induced Polarization (IP)
Gravity
Gamma-Ray Spectrometry
Physical-Property Measurements on Rock Samples

PROGREM operator carrying out a ground magnetic survey — **Ground Magnetic Surveys**High-resolution magnetic data acquisition for detailed geological and structural mapping.

UAV towing a magnetometer above a desert survey area — **UAV Magnetic Surveys**High-resolution airborne magnetic acquisition for efficient coverage of large and challenging survey areas.

MAGNETIC SURVEYS

Ground magnetics UAV magnetics

PROGREM provides high-resolution ground and UAV magnetic surveys for mineral exploration and geological mapping. Survey configurations are adapted to project objectives, target characteristics, terrain conditions and the required spatial resolution.
Magnetic data are processed and interpreted to delineate magnetic anomalies, map geological structures and lithological contrasts, and support the identification and characterization of exploration targets.

Applications: Geological and structural mapping
Lithological contact delineation
Fault and shear-zone mapping
Magnetic anomaly detection and target delineation
Mineral exploration targeting
Regional and detailed magnetic mapping
Acquisition systems: Ground magnetic surveying
UAV magnetic surveying
Base-station magnetic monitoring
GNSS/RTK positioning
Equipment: GEM Systems GSM-19 Overhauser magnetometers
Geometrics MagArrow magnetometers
DJI M350 RTK / M400 RTK UAV platforms
GNSS/RTK positioning systems
Data processing & deliverables: Diurnal correction and QA/QC
Total Magnetic Intensity (TMI)
Magnetic derivatives and enhancement filters
Reduction to the Pole (where applicable)
Magnetic anomaly maps and profiles
2D/3D interpretation and target delineation
Survey configuration: Ground: detailed investigation and high-resolution target characterization
UAV: rapid, systematic coverage of large or difficult-access areas

Setting up a resistivity and induced polarization array — **Electrical Resistivity & IP Field Acquisition**

Resistivity & Induced Polarization (IP)

PROGREM conducts electrical resistivity and induced polarization (IP) surveys for mineral exploration and subsurface characterization. Survey configurations are adapted to target geometry, investigation depth, terrain conditions and project objectives.

Applications: Mineral exploration and target delineation
Sulphide mineralization investigation
Geological and structural mapping
Hydrothermal alteration characterization
Resistivity and chargeability contrast mapping
Acquisition systems: Induced polarization (IP) surveys
Electrical resistivity surveys
2D electrical imaging
Electrical profiling and sounding
Multi-electrode acquisition
Equipment: ELREC TERRA receivers
TIP 6000 transmitter
SYSCAL Pro multi-channel system
High-power generators and field accessories
Data processing & interpretation: Data QA/QC and validation
2D / 3D resistivity and chargeability inversion
Pseudosections and interpreted sections
Geological and geophysical data integration
Target delineation and interpretation

Gravity

PROGREM conducts ground gravity surveys to map subsurface density contrasts and support structural interpretation, basin studies and mineral exploration.

Applications: Regional and detailed structural mapping
Basin geometry and depth-to-basement studies
Density contrast mapping for mineral targets
Cavity and void detection
Measurements: Relative gravity
Bouguer gravity anomaly
Equipment: Scintrex CG-5 Autograv gravimeter
GNSS/RTK positioning systems
Processing & interpretation: Drift, tide and instrument-height corrections
Free-air, Bouguer and terrain corrections
Regional–residual separation
2D / 3D density modelling

Gamma-ray spectrometer used by PROGREM — **Gamma-Ray Spectrometry**

Gamma-Ray Spectrometry

PROGREM conducts ground gamma-ray spectrometry surveys to characterize natural radioelement distributions and support geological mapping, alteration mapping and mineral exploration.

Applications: Geological and lithological mapping
Hydrothermal alteration mapping
Radioelement distribution mapping
Mineral exploration
Geological contact delineation
Measurements: Potassium (K)
Uranium (eU)
Thorium (eTh)
Total count
Equipment: MS-350 gamma-ray spectrometer
Processing & interpretation: Radiometric data QA/QC
K, eU and eTh mapping
Radioelement ratio maps
Ternary radiometric maps
Integration with geological and remote-sensing data

Physical-Property Measurements on Rock Samples

PROGREM performs physical-property measurements on rock samples to characterize their petrophysical properties and support geological characterization, geophysical data interpretation and integrated subsurface modeling.

Physical properties: Magnetic susceptibility
Density
Electrical resistivity
Electrical conductivity
Chargeability
Natural gamma radioactivity
Applications: Lithological characterization
Mineralized-zone characterization
Physical-property contrast analysis
Geophysical data calibration
Geological and geophysical interpretation
Support for 2D / 3D subsurface modeling
Data analysis & deliverables: Physical-property database
Statistical characterization
Property correlation analysis
Comparative analysis between lithologies
Integration with geological and geophysical datasets

In the field

A selection of our geophysical field campaigns.

PROGREM field base set up for a geophysical survey

PROGREM operators preparing equipment at sunset

PROGREM field team with GNSS antennas and equipment cases

CG-5 gravimeter recording a gravity station

Gamma-ray spectrometer in use in the field

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