Application domain
Environment
Understanding a setting means reading its superficial geology. We map it continuously, where boreholes give only points.
The questions
The context, not just the point.
A borehole gives a local truth. Geophysics gives the structure between boreholes — which is where the surprises hide.
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Where does groundwater flow?
Palaeochannels, gravel lenses, impermeable interfaces: the structures that guide flow have a clear geophysical signature.
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How thick are the superficial formations?
Colluvium, alluvium, weathered rock. Their thickness governs both the resource and the vulnerability of the setting.
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Where should piezometers go?
Mapping beforehand avoids blind siting and markedly improves the yield of a campaign.
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Is the alluvial deposit workable?
Overburden thickness, material quality, barren zones: three parameters assessable before a quarry opens.
Explorer
From surface to bedrock.
Drag the marker down. In environmental work the useful investigation depth often exceeds that of other domains.
- Superficial formations 0 – 1.5 m ARP®
- Colluvium and alluvium 0.5 – 3 m ARP®
- Conductivity and water flow 0 – 6 m EMP
- Palaeochannels 1 – 6 m EMP
- Depth to bedrock 2 – 10 m EMP
Investigation strategy
The methods deployed.
Here depth matters more than centimetric resolution: electromagnetics takes over from towed resistivity.
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EMP
Electromagnetics
Conductivity to six metres and beyond: the primary tool for geological structure and water movement.
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ARP®
Electrical resistivity
High measurement density over the first few metres: superficial formations and lithological transitions.
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GPR
Ground-penetrating radar
On resistive ground — sand, gravel — it details interfaces with a precision nothing else matches.
Projects
Work in this sector.
Geomorphological maps, interpreted sections, alluvial deposit mapping.
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Environment
In preparation
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Before / after
In preparation
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GCServer
In preparation
Content in preparation.
Characterise a setting?
Consultancies, hydrogeologists, quarry operators: let's talk geological context and objectives.