Ground, borehole, and drone magnetic surveys
Ground, borehole, and drone surveys are used for direct detection of iron-rich minerals or for mapping geological units with variable susceptibilities.
Applications in mineral exploration:
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Iron ore prospecting.
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Iron formations with associated mineralization: IOCG.
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Chromite and manganese prospecting.
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Sulphide occurrences associated with magnetite and/or pyrrhotite.
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Kimberlites, asbestos & placer deposits.
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Geological mapping of lithology.
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Structural mapping (faults, fractures, shear zones, folds, etc.).
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Structurally-hosted deposits (U-conglomerates, stratiform Pb-Zn).
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Depth to bedrock to determine thickness of sedimentary section, overburden, etc.
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Inexpensive equipment and straight forward survey procedures.
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High resolution and cost-effective for detail or reconnaissance surveys.
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Useful complementary data enhances interpretation of other geophysical surveys.
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Highly sophisticated processing and interpretation tools.
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Weak and ambiguous responses at low latitudes.
Technical specs:
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The total field can be measured in continuous mode (every second) or at each station.
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A magnetometer with integrated GPS simultaneously records the exact position and the total field by foot, boat or all-terrain vehicle.
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Measurement of the total field (Hx, Hy, Hz).
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Can be combined with other sensors.
Deliverables:
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Color cards for contours and profiles.
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Total field vertical gradient.
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Second derivative derived from tilt.
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Analytical signal.
Innovation: AeroVision Drone MAG Surveys (Airborne Geophysics)
