G-tek personnell have mapped faults and Magnetic Intrusions in Coal seams, Gold bearing buried alluvial channels, Rock hardness profiles for road building and carried out Total Field Magnetometer surveys over mineral prospects.

G-tek’s personnel have experience at conducting extremely high resolution surveys, typically at about 1 metre above the ground.

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Minerals exploration technologies generally use a passive total field magnetic sensor to measure minute changes in the Earth’s magnetic field. These changes show the potential for discontinuities and anomalies such as faults, shears and igneous intrusions – all of which influence the earth’s magnetic field.

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In a SAM survey, an electrical signal is introduced into the Earth with a frequency typically in the range of 0.3 to 30 Hz.

Highly sensitive magnetic detectors are then able to measure the response and can provide important geophysical parameters simultaneously and in perfect registration, including:

• Total field magnetic intensity (TMI)
• Total field magnetometric resistivity (TFMMR)
• Total field magnetometric induced polarisation (TFMMIP)
• Total field electromagnetic response (TFEM)

These parameters are recorded continuously, not just at large intervals, and provide highly detailed information for use in geological modelling and positioning of drill holes.

For more detailed information about SAM please visit the LIBRARY.

SAM has been used extensively in Western Australia for mapping the small geological structures associated with gold deposits and testimonials are available from these clients detailing the outstanding results.

Importantly, SAM can be used to see through highly conductive surface layers, such as salt lakes, which usually stop any form of electrical geophysics and make drilling difficult and expensive.

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