Mineral exploration relies upon airborne geophysical companies that specialize in conducting highly precise surveys with high resolution data acquisition and advanced data interpretation. The success of a geophysical survey is dependent not only upon the survey itself, but the ability to interpret the data obtained accurately and apply it appropriately. Mining companies conduct airborne geophysical … Read more
The Demand for Geophysical Surveys; Greater global demand for minerals is leading to an increased demand for mineral exploration and in turn, airborne geophysical surveys. Airborne geophysical surveying, and specifically,, airborne magnetic surveys and airborne radiometrics surveys have become leading techniques to lubricate exploration. Both helicopters and fixed wing aircraft are used for efficient acquisition … Read more
Gravity surveying is the process of measuring the local gravitational field of the Earth. Airborne gravity surveying revolves around the process of measuring and mapping changes in the gravity field with an airborne gravimeter on a helicopter or an aircraft. This ultra-sensitive equipment reveals information about the subsurface density of rock within the Earth. The … Read more
Quality, experienced Geophysicists are integral to overseeing the proper execution of all stages of the the acquisition process. Starting with initial survey design and an extensive review of the client’s survey targets and goals, Terraquest incorporates an experienced Geophysicist from the start of the planning process to provide input into extensive survey planning including, There … Read more
Radiometric Surveys Radiometric Surveys detect and map gamma rays, and can be performed on the ground, in the air, or in a borehole. Airborne gamma-ray spectrometry or radiometric surveying for mineral exploration measures the gamma-rays that are emitted from naturally occurring radioactive isotopes that are found in rocks and soils near the surface. The most abundant of … Read more
Why Use Aeromagnetic Surveys? Aeromagnetic surveys are an efficient geophysical prospecting tool for many mineral and petroleum exploration companies and government agencies. A fixed-wing airplane or helicopter is extensively modified to be magnetically quiet and equipped with wingtip pods, a tail stinger, or a towed bird to house magnetometers for acquiring magnetic data. This type … Read more
In radio communications terminology, VLF means Very Low Frequency, typically about 15 to 25 kHz. VLF-EM is a geophysical survey technique that measures VLF signals from very powerful radio transmitters that induce electric currents in conductive bodies thousands of kilometres away. These powerful transmitters are located around the world, and are used primarily for military communication purposes with … Read more
Finding the Best Airborne Geophysical Survey Companies The best global geophysical survey companies will be able to plan and execute effective geophysical surveys in any area of the world. Successful airborne geophysical survey providers know how to safely acquire high quality geophysical data, which can be used to enhance exploration and engineering projects. Acquiring accurate … Read more
Facts About Electromagnetic Surveys Electromagnetic (EM) geophysical surveys are based on the propagation of electric currents and electromagnetic fields in the earth. EM surveys can be conducted as airborne, ground or borehole surveys, and is one of the most commonly used methods in mineral exploration. In EM surveys, an electric current is transmitted through the … Read more
Professional Geophysical Consultants Many companies in the mineral and petroleum exploration industries already know the value of using professional geophysical consultants. These consultants specialize in selecting, planning, executing, and controlling the quality of comprehensive airborne geophysical surveys which provide essential data for the exploration project. This data is used to create geophysical maps of specific … Read more
