Industry News and Insight

A qualified geophysical company is capable of providing a wide range of geophysical surveying services, though typically specialize in either ground or airborne acquisition. The capabilities of a geophysical company are contingent upon their years of survey experience within the field of geophysical exploration as well as their dedication to quality QA/QC and good field … 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

Even though airborne surveys are a relatively low cost and efficient method of exploration, each survey must be as economically viable as possible in the grassroots stage of exploration.  Therefore it is extremely important that your airborne survey is thoroughly planned and executed according to the predetermined survey plan.  Integral to the planning process are … Read more

Airborne Electromagnetic geophysical surveys measuring the electrical resistivity of the earth are conducted from the air using towed EM arrays or EM loops.  Airborne EM typically use a transmitter that carries a current that varies in magnitude as a function of time to measure electromagnetic conductors.  In Time domain EM systems, the current is turned … Read more

Electromagnetic surveys are conducted as a form of geophysical exploration in order to detect non-metallic minerals and valuable minerals. The mining industry uses this surveying method as a means of comparatively lower cost prospecting to acquire useful data for map development. While electromagnetic surveys can be done either by air or on the ground, airborne … Read more

Exploration geophysics is used as a means of uncovering quality data regarding the mineral consistency within certain areas of the Earth’s crust. The information gathered during an exploration aids in the production of geophysical maps, which are utilized by mining companies as part of the prospecting stage for mineral exploration. The process of exploration geophysics … Read more

In terms of conducting geophysical surveys, gamma spectrometry or airborne radiometric surveys can be employed as a means of detecting gamma rays or natural radioactive emanations. This detectable radiation comes from the decaying of some of the natural elements occurring in the Earth.  For geological mapping, three elements are most diagnostically useful: potassium, uranium and … Read more

Exploration geophysics is the science of acquiring data regarding the Earth’s properties using above ground survey methods.  Electromagnetic surveys are used to assess the varying electric currents conducted between sulphide minerals and barren silicate minerals.  Airborne electromagnetic surveys (AEM) offer a fast and cost effective means of acquiring data on electromagnetic currents. Through the use … Read more

Airborne magnetic geophysical surveys or aeromagnetic surveys are one of the most commonly employed geophysical survey methods being practiced today.  Aeromagnetic surveys are considered a primary and essential survey technology and are typically flown in conjunction with other survey technologies. An airborne magnetic survey is able to measure the earth’s magnetic fields from the air. … Read more

Airborne geophysical surveys and magnetic data acquisition are common practices that benefit the mining industry and a wide range of exploration professionals. Airborne geophysics provides a broad overview of the geology of a particular area, as well as measure the fluctuating magnetic signatures found in the Earth’s crust that may be indicative of mineral concentrations. … Read more