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Ground based geophysical surveys


Electrical Exploration

Electrical exploration byTDIP method

A group of methods based on recording the effects of induced polarisation of rocks and ores. The effective depth of research ranges from the first few meters to 500 – 600 meters. They are widely used in solving the exploratory tasks related to the search of objects with interspersed structure (most sulfide and oxide minerals). Based on these methods, this group is almost always included in exploratory groups when solving the ore geology problems:

gold deposits; platinum metals; uranium; ferrous, non- ferrous, rare and scattered elements (sulfides) ; deposits of polymetals, scarlet and porphyry copper type.

The detection of elevated concentrations of the ore minerals associated with the process of metasomatosis. In addition to solving problems of ore geophysics these methods are very successfully used to solve problems in hydrogeology, engineering geology and ecology.

Electrical exploration using TDEM method TDEM

Probing the formation of the deposit in real time. The use of technology is based on its ability to differentiate geological ores, that differ from each other in terms of their electrical conductivity (resistance).

The depth of the research ranges from the first few meters to 500 – 800 meters.

This method can be used effectively in search for ores of massive and veined – interspersed types. This method is widely used to search for minerals such as polymetals, nickel, copper, lead, zinc, gold, platinum group metals, uranium, kimberlites in almost any geological environment including the presence of shielding strata.

The TDEM method is successfully used to solve problems in hydrogeology, engineering research and geoecology.

Magnetic exploration

This method is based on the study of the differences of the magnetic properties of rocks and magnetically active objects either natural or man – made in origin.

Magnetic exploration is used in geological mapping mineral prospecting and the study of the geological environment to solve engineering and geological problems.

This method is also widely used in archaeological surveys and also to detect local man – made magnetic objects that could pose danger during construction.

The GSM – 19 W magnetometer with an Overhouser sensor is designed for conducting ground – based magnetic surveys and studying the full vector of the Earth’s geomagnetic field. Magnetometers with Overhouser sensors have high sensibility and commonly used in ore surveys.

These devices have all the positive qualities of proton magnetometers ( they are not affected by shaking or vibration. The measurements are not affected by external changes (temperature, humidity, pressure). There is no need for a precise sensor calibration).