Geophysical Investigation Services

Electromagnetic & GPR Surveys for Mineral Exploration, Hydrogeology, Engineering & Archaeology

Q: What investigation depth does the Loza system reach?

In favorable conditions the Loza system resolves anomalies to approximately 200 m depth. Effective depth depends on site geology, target conductivity contrast, and survey parameters.

Since 2006, GPR Investigation has delivered subsurface geophysical surveys across 63 countries using the Loza dual-regime electromagnetic platform — from gold exploration in African greenstone belts to void detection under critical infrastructure in Europe and Central Asia.

The Loza system operates in dual electromagnetic regime: structural imaging at early times, conductive anomaly detection at late times — both captured in a single survey pass. Investigation depth reaches approximately 200 m, depending on site geology and target type.

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63 Countries

5 Continents

~200 m Investigation depth

Since 2006 Field experience

Wave + Diffusion Dual-regime response

Our Services

Mineral exploration geophysical survey — gold and base metal targeting

Mineral Exploration & Drill Targeting

Electromagnetic profiling for gold, base metals, and conductive ore body detection. Structural controls, shear zones, and alteration corridors resolved in a single pass.

Orogenic gold exploration — greenstone belts, shear-hosted deposits
Base metal targeting — sulfide bodies, conductive anomaly mapping
Structural control mapping — faults, lithological contacts, fold axes
Drill hole prioritization — depth estimates and target continuity
Decision-ready reporting with geology integration

Active regions: Zimbabwe, Tanzania, Zambia, DRC, Ghana, Peru, Chile, Kazakhstan

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Hydrogeology groundwater survey — aquifer detection and well placement

Hydrogeology & Groundwater Targeting

Locate productive aquifer zones and reduce dry-hole risk before drilling. Effective in both crystalline basement and sedimentary settings.

Fractured aquifer mapping — basement rock and weathered zones
Paleochannel detection — buried valleys and paleo-drainage systems
Groundwater well site selection and depth estimation
Saline intrusion and contamination plume detection
Subsurface profiling through freshwater bodies

Active regions: Sub-Saharan Africa, Middle East, Central Asia, South America

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Geotechnical survey — void detection, karst, mine workings, dam inspection

Geotechnical Survey & Subsurface Risk Engineering

Detect voids, karst cavities, abandoned mine workings, and seepage zones before they become failures — at depths that conventional methods cannot reach.

Void and karst cavity mapping — sinkhole risk assessment
Abandoned mine workings — stopes, shafts, and disturbed crown pillars
Dam and embankment inspection — seepage, suffosion, internal erosion
Infrastructure corridor profiling — roads, pipelines, linear projects
Building foundation and subslab investigation

Active regions: Ukraine, Kazakhstan, Turkey, Europe, Central Asia

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Archaeological Geophysics

Non-invasive mapping of buried archaeological features, structural remains, and cultural stratigraphy without excavation.

Buried walls, foundations, and chamber detection
Stratigraphic layer mapping and cultural horizon identification
Tomb and burial feature prospection
Survey grid design for excavation planning
Heritage site documentation and monitoring

Projects include: Sacsayhuamán (Peru), Crimea, Turkey, Central Asia

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Geophysical consulting and data interpretation

Geophysical Consulting & Data Interpretation

Turn existing geophysical datasets into actionable geological decisions. Independent review, reprocessing, and target modeling from existing surveys.

Independent review of existing geophysical datasets
Attribute extraction and anomaly classification
Integration with drill results and geological models
Go / No-go target recommendations
Technical reporting for investor and regulatory audiences

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Exploration Cost Reduction

Systematic geophysical screening to eliminate low-priority targets and concentrate drilling budgets where the probability of success is highest.

Large-area reconnaissance and target ranking
Blind drill hole elimination through pre-drill geophysics
Multi-target comparison and priority matrix
Budget allocation support for exploration programs

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How a Survey Project Works

From first contact to final deliverable — a typical engagement takes 2–6 weeks depending on area and access conditions.

Brief & Scoping

We review your target area, geological setting, and objectives. We propose survey geometry, expected depth, and deliverable format.

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Field Acquisition

Survey lines are acquired with real-time field QC. Preliminary interpretation begins during acquisition to guide survey optimization.

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Processing & Interpretation

AU Studio processing extracts dual-regime attributes. Sections, maps, and anomaly classifications are produced.

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Decision-Ready Report

Recommendations with drill collar coordinates, depth estimates, and target priority — integrated with your existing geology.

Frequently Asked Questions

What investigation depth does the Loza system reach?

Investigation depth depends on site geology, target conductivity contrast, and survey parameters. In favorable conditions — resistive basement with conductive targets — the Loza system resolves anomalies to approximately 200 m depth. In conductive overburden (e.g. thick laterite or saline soils) effective depth is reduced. We assess expected depth during project scoping.

What is the difference between Loza and conventional TEM or GPR?

The Loza system operates in the transition zone between wave propagation (conventional GPR range) and diffusion (classical TEM range), capturing both structural and conductive responses in a single dataset. This dual-regime approach allows simultaneous detection of geological structures (faults, contacts, veins) and conductive anomalies (sulfides, water-bearing zones, voids) without requiring two separate surveys.

How quickly can a survey be mobilized?

For most projects we can mobilize within 2–4 weeks of contract. The Loza system is compact and deployable without heavy logistics — operational in remote areas with vehicle access. Survey productivity is typically 3–10 line-km per day depending on terrain and profile spacing.

What deliverables do clients receive?

Standard deliverables include: processed 2D sections (structural and conductivity proxy), anomaly maps with target coordinates, depth estimates, drill priority recommendations, and a technical report integrating survey results with available geological data. Deliverable format is adapted to client requirements (GIS-ready, PDF, or project-specific formats).

In which countries and regions do you operate?

GPR Investigation has completed surveys in 63 countries across Africa, Asia, Europe, South America, and Australia. Active regions include Zimbabwe, Tanzania, Zambia, DRC, Ghana, Senegal, Mali, Burkina Faso (West Africa), Kazakhstan, Uzbekistan (Central Asia), Peru and Chile (South America), Turkey, and across Eastern Europe.

Can you work with existing geophysical data from other methods?

Yes. Our consulting service covers independent review and reinterpretation of existing datasets including IP, magnetics, gravity, airborne EM, and conventional GPR. Integration with Loza survey results is also available for projects where multiple methods have been applied.

Ready to discuss your project?

Tell us your target area, geological setting, and exploration objective — we will propose the most appropriate survey approach and expected outcomes.