Spectral IP and Resistivity

Spectral Induced Polarization & Resistivity surveys (IP & Res) are excellent methods for detecting disseminated sulphide mineralization that could be associated with gold. The surveys are carried out using surface and borehole modes.

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Large Loop TDEM

ClearView Geophysics Inc. owns and operates transient PROTEM receivers and TEM57/67 transmitters built by Geonics. This system has proven itself useful for detecting both good and bad conductor sulphide mineralization located both shallow and 100’s of metres deep.  It is also useful for detecting sources of water.

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Snowmobile-Mode Cesium Magnetics

Cesium magnetometer surveys are carried out using a custom-built sleigh pulled behind a standard snowmobile.  This system has proven itself on numerous large-scale mineral exploration projects during the past 15+ years. 

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Seismic Refraction

Seismic Refraction surveys are typically carried out for depth to bedrock investigations.  The "shot" can be either an explosive or hammer source.  Interpex IXRefraX software is used to process the data.

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Electromagnetic (EM) and Magnetic surveys

EM and Magnetic surveys are perhaps the most common geophysical methods used on mineral exploration and environmental investigations. The most commonly used EM instruments for environmental investigations are the Geonics EM31 and EM61.

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GPR ( Ground Penetrating Radar )

GPR works best in low conductivity areas. Conductive materials (e.g., clay) attenuate the GPR signal to the point that very little depth penetration is achieved. Penetration is greatest in unsaturated sands and fine gravels.

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Gravity

Gravity surveys are completed for a number or applications, including mineral exploration (e.g., diamonds) and geotechnical investigations (e.g., escarpments).

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Geophysical Interpretation

ClearView has extensive experience interpreting airborne and ground-based geophysical data. We use UBC's suite of inversion software to produce 2D and 3D interpretations of total field magnetics and IP/Resistivity data. Post-processing software is also used to produce various derivative datasets and maps.  

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Welcome to ClearView Geophysics

ClearView Geophysics Inc. is a geophysical services company founded in 1996.  There is no better way to collect high resolution sub-surface data than with ground-based sensors or 'boots on the ground'. When you describe your project goals to us, we will design a geophysical survey to help you achieve those goals in the most cost-effective manner possible. Getting ground-based geophysical data is arduous - so we are constantly working to find ways to make it easier, whether its with our snowmobile- and ATV-mode surveys or with exo-skeleton systems for more supportive and safer fieldwork.

Joe Mihelcic, P.Eng., M.B.A.
Geophysicist, President & Owner

About the Owner: Mr. Mihelcic is an Applied Science '88 Geological Engineering (Geophysics Option) graduate of Queen's University at Kingston and '95 MBA graduate of Ivey Business School at the University of Western Ontario in London. He enjoys designing and implementing off-the-shelf components and technologies to make ground geophysical surveys easier and therefore more cost effective. He also writes his own software to streamline processing and interpretation.

500 MHz, 250 MHz & 100 MHz GPR scans now standard on most shallow investigation projects.

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ClearView owns Sensors & Software 100 MHz, 250 MHz and 500 MHz systems...this image shows great resolution, but penetration is not very deep using 250 MHz...

For most projects, the 250 MHz system is ideal for detecting many types of piping, utilities, UST's, limits of fill, former structures, and other features.  But in silty, clayey or conductive fill, a 100 MHz system is required even though resolution is not as great.  A 500 MHz system provides very high resolution and detects many more pipes and utilties.  ClearView now routinely has all three systems on-hand so that either one or all can be used depending on site specific conditions or to provide extra resolution and depth penetration. When needed, a 1000 MHz (1 GHz) system is also used.

The image below is from a 100 MHz survey along a different survey line at the same site, showing less resolution but better penetration:

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For Private Locates, a Metrotech Pipe & Locator system PLUS GPR at 500 MHz, 250 MHz and 100 MHz makes it easier to detect pipes and utilities particularly in silty to clayey soils and through fill.

The following image is from a 500 MHz survey through 3 layers of concrete flooring totaling 2 feet thick with rebar and wire mesh.  Pipes and utilities are seen at positions -7.5m and -4m.  Notice native soil layering starting at around 1 metre deep (assumes 0.10 m/ns):

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 The same line completed with 1000 MHz shows even more resolution of the concrete layers and rebar:

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 For comparison, the 250 MHz data along the same line is shown next:

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...and finally with 100 MHz.  Notice in all the sections to the right of position 0 the area is in a vestibule room with different flooring.

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