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.

High Resolution MaxMin EM for Gold

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MaxMin by Apex is a mature method used over many decades for mineral exploration.  ClearView is presently applying the method on a gold exploration project to see if it can detect subtle quadrature (out-of-phase) responses that might indicate stringer mineralization, faults or geologic formation variations.

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The lowest 110 Hz frequency is used to null the inphase response for optimal intercoil separation, while the highest frequencies: 7k, 14k, 28k and 56k, are used to map the inphase and quadrature response from the subsurface.  Because, in this case, bedrock is mostly near or at surface, and target mineralization is shallow, a 50-metre Rx/Tx separation was used with readings taken at 5-m intervals.  At least 1 km of production per day was achieved for 5 frequencies and 5-m stations through rugged topography.

The O/P (i.e., quadrature) response for the lowest frequency used, i.e., 7040 Hz, provides information on the longest time-constant anomalies.  A simple colour-shaded map and first vertical derivative of the raw quadrature response was compared to our high resolution cesium magnetics data collected on the same HLEM MaxMin survey lines so that trends could be compared to determine which MaxMin anomalies are the result of bedrock and which are most likely the result of overburden.

In wide-open areas, rather than MaxMin, ClearView uses its single-operator high resolution TDEM surveys in snowmobile-mode in tandem with a cesium magnetometer sensor for exploration in the arctic.  This system is state-of-the art and provides high production rates with full-waveform data.  But for thick bushy areas, MaxMin is still highly effective and customizable to specific applications.

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