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Geophysical survey services analyzing subterranean cave formations.
Field & Exploration Services

Geophysical Survey

Geophysical Survey Services for Mineral Exploration

Our geophysical survey services use three methods: magnetic and radiometric surveys from the air by drone, and electromagnetic (EM) surveys on foot. We collect the data, process it, and interpret it.

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Flown by an FAA Part 107 licensed pilot with more than 2,500 hours on unmanned aircraft, flying them since 1992. Certified Mapping Scientist, UAS (ASPRS).

Subsurface view for geophysical survey services

What each Method Shows

  • Magnetic (by drone): small changes in the earth's magnetic field caused by the rock below. It traces faults, contacts and intrusions under soil and gravel. Flown with a Geometrics MagArrow II magnetometer.

  • Radiometric (by drone): natural radiation from potassium, uranium and thorium at the surface. It maps alteration and rock types, and it is a direct tool for uranium. Flown with a Georadis D230A gamma-ray spectrometer.

  • Electromagnetic, or EM (on the ground): how easily the ground conducts electricity, measured at several frequencies at once. Conductive zones can point to clay alteration, sulfides, groundwater or buried metal. Run on foot with a Geophex GEM-2 handheld multi-frequency sensor.

DJI drone blueprint for geophysical survey services
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Which one fits your target?

  • Uranium: radiometrics is usually the first look.

  • Faults, contacts and intrusions under cover: magnetics.

  • Conductive targets such as sulfides, clay alteration or groundwater: EM.

  • Many projects run more than one method over the same ground. Tell us what you're looking for and we'll recommend the mix.

What you get from our geophysical survey services

  • A survey design set for your target. 

  • Processed maps for each method. 

  • An interpretation: what the data shows and where to look next.

  • The data files, for your own geologist or geophysicist.

Abstract contour lines for geophysical survey services
Field crew with UTV for geophysical survey services.

Works best with

A survey finds the targets. The next steps prove them up, and the same team can take them:
 

Frequently Asked Questions

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+1 (805) 450-6330

info@landsurveyadvisors.com

Interested in working with us? 

How did you hear about us?
Linkedin
Google / Search Engine
Blog or Publication
Referral
Other

Fill out our form or give us a call! 

info@landsurveyadvisors.com

+1 (805) 450-6330

How did you hear about us?
Linkedin
Google / Search Engine
Blog or Publication
Referral
Other

Fill out our form or give us a call! 

Interested in working with us? 
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