Method Reference

Technique, depth of investigation & application

A working summary of the geophysical methods we field, matched to what each is best at detecting.

TechniqueInstrumentationModeDepth of InvestigationTarget
Ground & Aerial Magnetic SurveyMagarrow (aerial), GEM / Geometrics (ground)2D profiles, stations30–500mMagnetite, ilmenite, iron/nickel/gold-associated minerals
Induced Polarization SurveySyscal / AGI, VIP1000 Transmitter2D & 3DUp to 1.5kmDisseminated sulphides — chalcopyrite, pyrite, galena
Electromagnetic (FDEM / TDEM)Geonics, IRIS Promise, Zonge2D, induction5–800mMassive sulphides, graphite, saline groundwater
Audio Magnetotelluric (AMT)Geode EM3D, Phoenix / CSAMT2D, ambient EM fieldDeep (km-scale)Deep minerals, geothermal, deep geological structure
Ground Penetrating RadarSensors & Software, PulseEkko2D, active radio waves20–200mConductive/resistive minerals, bauxite
Wireline LoggingRobertson GeologgingDownhole100–2000mPorphyry copper, IOCG, nickel sulphide, lithium brine, geothermal
Fleet

Mines & minerals survey equipment

3D IP chargeability inversion block

Magnetometers

Land Mag — G859 & G857 Rover
Aerial Mag — Magarrow with DJI350RTK
Magnetic susceptibility — Kappameter
3D geophysical inversion sections

Gravity Systems

CG6 gravimeters — several units
High-temperature option up to 55°C
GIS survey grid over terrain

Electrical Resistivity / IP

Syscal Pro — 2D/3D, 96-channel
GD20 multi-electrode, 100–200 channel
3 complete systems + 2× 1D Elrec T
Seismic and drilling survey vehicle

Seismic Surveys

Shallow reflection — 500m depth, 192-channel
8 Geodes, 10m takeout, choice of geophones
Refraction, MASW, HVSR, ReMi, spectral analyses
Electromagnetic field survey team

Electromagnetic (EM)

FDEM — CMD-Explorer, IRIS Promise
TDEM — Zonge GDP3224, NT20 NanoTEM, ZTEM30A
Downhole EM — Digi Atlantis, 1000–2000m winch
Groundwater and drilling survey illustration

AMT & GPR

Geode EM3D — up to 12 channels, 4 stations
GPR — GSSI 3000/4000, PulseEkko 12.5/25/50MHz
2D & 3D processing, joint inversion available
Downhole

Wireline Logging Suite

A complete downhole logging toolkit for aquifer classification, flow-zone mapping and geotechnical borehole characterisation.

Optical & Acoustic TV Spectral Gamma Natural Gamma Induced Polarization Resistivity-DLL3 Temperature & Conductivity Impeller Flowmeters Full-Wave Sonic P&S Logging Density & Neutron Porosity
Diamond core drilling machine used for wireline logging access
Modeling & Inversion Software

From raw signal to decision-ready model

Geology

Leapfrog / Discover 3D

Mineral and geological 3D modeling for reserve estimation.

Visualisation

virGIS (RUNETTE)

Customised 3D modeling reviewed through VR headset.

EM Modeling

Maxwell

Time & frequency-domain modeling; ground, airborne, fixed and moving loop.

EM Inversion

SPIA & STEMINV

Aarhus Geosoftware inversion suite for TDEM data.

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