Collecting Data Through Airborne Surveys and Creating Geophysical Mappings

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Collecting Data Through Airborne Surveys

Airborne geophysical surveys are used to acquire a regional overview of the geologiy. Many Jr. mining and exploration companies utilize airborne methods of prospecting to acquire data through airborne surveys. Airborne surveys provide a cost-effective and accurate method of creating geophysical mappings for large areas of interest.
Airborne surveys make it possible to create geophysical mappings for large areas in a fraction of the time and using minimal manpower.

Data Acquisition Systems

Airborne geophysical survey companies typically utilize different types of data acquisition systems to gather data for specific geological characteristics. Each type of sensor is specialized to detect a particular type of geological setting. It also dictates the manner in which the airborne survey must be executed in order to deliver the best possible, and accurate results.
The major types of airborne surveys include the following:
  • Magnetic – used to determine the presence and intensity of magnetic anomalies. These magnetic anomalies can signal concentrations of magnetic minerals.
  • Radiometric – used to determine the levels of gamma rays and natural radiation emitted by mineral and rock-bound elements.
  • Electromagnetic – used to measure the electrical conductivity of the subsurface and detect the presence of base metal sulfides.  
  • Gravity – used to measure gravity anomalies which can be used to determine the rock density and other geophysical properties often association with oil and natural gas deposits
Today’s premier airborne geophysical survey companies have technologically-advanced data acquisition systems to monitor and record data from a variety of sensors and external devices simultaneously, for real time applications with strict timing constraints.  They also have experienced crews that are able to execute the surveys in the most efficient manner possible and combine multiple survey types to acquire the most comprehensive datasets. 
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