Geophysical Services Coverage

Rhino Exploration Limited, in collaboration with its strategic partners — Kumba Exploration and Mining Limited, Earth Scan Technologies Limited, and GPR Investigation Limited — provides integrated geophysical survey, processing and interpretation services across Africa, Europe and the CIS region.

Core Geophysical Methods

Transient Electromagnetic (TEM) – Loza System

The Loza system is a transient electromagnetic sounding technology based on long resistively loaded collinear electric dipoles and operating within the wave–diffusion transition regime.

The system is designed for deep subsurface investigation and structural imaging, with applications that may include:

• Detection and delineation of conductive sulphide-related targets

• Mapping of faults, shear zones and fractured systems

• Identification of conductive structural and alteration corridors

• Investigation of stratigraphic and lithological conductive horizons

• Detection of subsurface conductivity contrasts associated with geological boundaries

Key capability: investigation of deep conductive and structurally controlled targets where geological and ground conditions are suitable.

Induced Polarisation (IP) and Resistivity

Induced Polarisation surveys measure variations in chargeability and electrical resistivity and are widely used in mineral exploration, particularly for the identification and delineation of disseminated sulphide systems.

Applications include:

• Gold and copper sulphide exploration

• Mapping of chargeable zones potentially associated with pyrite, chalcopyrite and arsenopyrite

• Differentiation of lithological and alteration domains

• Structural and mineralisation-target delineation

• Definition and refinement of targets prior to drilling

Magnetic Surveys – Ground and UAV-Based

Magnetic surveys measure spatial variations in the Earth’s magnetic field and provide valuable information on geological structure, lithology and intrusive architecture.

Key applications include:

• Structural mapping of faults, shear zones and fold systems

• Detection and delineation of dykes and intrusive bodies

• Identification of lithological contacts and magnetic domains

• Mapping of alteration-related magnetic responses

• Regional prospectivity analysis and detailed exploration targeting

Both ground-based and UAV magnetic surveys can be deployed depending on project scale, terrain, required resolution and exploration objectives.

Processing and interpretation may include:

• Total Magnetic Intensity (TMI)

• Reduction to Pole / Reduction to Equator where appropriate

• First and second vertical derivatives

• Horizontal gradients

• Analytical Signal Amplitude

• Structural interpretation

• Depth estimation and magnetic-source modelling

• 2D and 3D inversion where supported by the available data

Ground Penetrating Radar (GPR)

Ground Penetrating Radar is a high-resolution geophysical method used to image shallow subsurface structures through contrasts in electromagnetic properties.

Applications may include:

• Mapping of weathering profiles and regolith thickness

• Identification of cavities, voids and subsurface discontinuities

• Delineation of shallow faults and structural features

• Investigation of lithological contacts

• Assessment of tailings and waste-dump structures

• Near-surface mineral exploration and engineering investigations

Investigation depth and resolution depend on antenna frequency, electrical conductivity, moisture content and local ground conditions.

Integrated Geophysical Interpretation

Geophysical datasets are processed and interpreted within a geological and structural framework rather than as isolated anomalies.

Our integrated interpretation may include:

• Correlation of multiple geophysical datasets

• Integration with geological, geochemical and remote-sensing information

• Identification of structural controls on mineralisation

• Delineation of geophysical domains and anomaly corridors

• Estimation of anomaly depth and geometry

• 2D and 3D subsurface modelling

• Generation and prioritisation of exploration targets

Survey Design and Execution

Rhino Exploration and its technical partners provide full-cycle geophysical project delivery, including:

• Survey planning and grid design

• Selection of appropriate geophysical methods

• Field mobilisation and data acquisition

• Equipment calibration and field QA/QC

• Data processing and filtering

• Geophysical inversion and depth modelling

• Geological and structural interpretation

• Target generation and prioritisation

• GIS-ready data preparation

• Technical reporting and recommendations