Geophysical ground surveys

Our services of geophysics are directly linked to field data collection. Surveys are carried out with various instruments according to the most appropriate geophysics method for your project. Here is the list of the main surveys carried out by Géophysique TMC :
  • Mag Ex
  • Map Plan Small

    Magnetic survey (MAG)

    Used as a basic geophysical tool, this method enables to measure the magnetic susceptibility contrasts of rock formation and thus to trace the geologic image of a sector.

    Electromagnetic survey (HEM)

    It permits to detect conductors as deep as 150 and to specify their physical properties through the use of an extended range of frequencies (110 – 14 080 Hz) and variable transmitter-receiver separations.

    • 3d Ip
    • Camino Rojo 004
    • Camino Rojo 013
    • Camino Rojo 040
    • WP 20150318 004
    • WP 20150319 003
    • WP 20150413 001
    • WP 20150416 003
    • WP 20150416 005
    • C112 1f 2 0
    • Deep Ip Small
    • Ip 5
    • Mexico 01
    • Rx 32

      Induced Polarization (IP)

      It is especially efficient for the detection of disseminated mineralization through the use of spacing and variable electrode arrangements. The various configurations enable us to conduct surveys more than 500 meters underground. This method also permits to highlight rock resistivity contrasts (silicified zone, shearing zone, etc).

      • Guy Squid
      • Louis Squid
      • P1290019
      • Pero1
      • Pero3 250x250
      • Ragl5

        Surface TDEM (Crone Deep-EM)

        Operating in the field of time and using large transmitter loops fed by a powerful transmitter (4 kW), this deep-investigation method enables to detect conductors buried as deep as 300 to 400 m, depending on the configuration used and the dimension of desired targets.

        • Gilles Bore 4
        • IMG 0439
        • IMG 0442
        • Borehole1
        • Borehole Data1
        • Borehole Ex
        • Squid 2
        • Squid 4
        • Squid 6

          Borehole TDEM (Crone Pulse-EM)

          It allows determining the presence of mineralized conductive zones around a drill hole within a radius which can reach 200 m, regardless of the drill-hole depth. This method makes the cost of drilling profitable through the provided information and by permitting to increase the drill grid.

          • Gravimetrie Mexique Avril 2012 010
          • Gravimetrie Mexique Avril 2012 029
          • Gravimetrie Mexique Avril 2012 059
          • Gravimetrie Mexique Avril 2012 074
          • Gravimetrie Mexique Avril 2012 081
          • Gravimetrie Mexique Avril 2012 094
          • Gravimetrie Mexique Avril 2012 132
          • Gravimetrie Mexique Avril 2012 160
          • Gravimetrie Mexique Avril 2012 173
          • Gravimetrie Mexique Avril 2012 185
          • Gravimetrie Mexique Avril 2012 198
          • Gravimetrie Mexique Avril 2012 214
          • Gravimetrie Mexique Mai 2012 015
          • Gravimetrie Mexique Mai 2012 019
          • La Foto2
          • La Foto4
          • La Foto5

            Gravimetry

            Measurements of the gravitational field in a series of different locations on an area of interest. The objective of exploration works is to associate variations with differences in the distribution of densities, and hence rock types. The gravity measurements provide information about the densities of underground rock. There is a wide range of density between types of rocks, therefore geologists can make inferences about the distribution of strata.

            • Equip1
            • Equip3
            • Map1
            • Map2
            • Photo1
            • Photo2
            • Stratagem Tx

              Magnetotellurics (MT)

              Geophysical technique that provides information about the distribution of electrical conductivities of underground rocks. This is a method of electromagnetic exploration where electric currents, of natural or artificial origin, continuously scour the basement. Their variations induce magnetic fields which can be detected on the surface. The magnetotellurics are particularly suitable for search of metal ores and study of geothermal sites and hydrocarbons.

              Seismic

              TMC carries out conventional or very high resolution land reflexion or refraction seismic data acquisition campaigns, using sources of all types (dynamites, weight drop or vibratory).

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