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 and more...

Cesium magnetometer and other geophysical surveys are carried out using custom-built sleighs, carts or rafts pulled behind standard snowmobiles, ATVs and boats.  The snowmobile-mode cesium magnetics system has proven itself on numerous large-scale mineral exploration projects during the past 25+ 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 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 high resolution ground-based geophysical data is arduous but worth it - so we are constantly working to find ways to make it easier, such as with our snowmobile/ATV/boat-mode surveys.

Joe Mihelcic, B.Sc.(Hon), P.Eng.(ON/NB/NL), P.Geo. (NU/NT/NS/NL), M.B.A.; other jurisdictions licensed and authorized as required.
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 C++ software to streamline processing and interpretation.

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The Dipole-Dipole electrode configuration is ideal for detecting off-hole targets because the transmitter and receiver electrodes are always at the same distance apart as the configuration moves down the borehole.  This makes detecting anomalies easier because if there weren't any, the resistivity profile would be flat in a uniform half-space.


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Snowmobile-mode surveys can be used with different geophysical techniques.  Our flagship survey is the cesium-magnetometer survey - almost continually applied and operated in the arctic on small and large-scale projects at spring-time personally by Mr. Mihelcic since 1996.  Only the mag sensor and GPS dome are on the sleigh separated by 1.7 metres.  Post processing corrections using in-house software correct for this layback and a 0.33-second system latency which is confirmed by speed tests done over anomalies in both directions.  The tried and true un-manned aluminum sleigh is located far back from the snowmobile.  It has proven durable in boulder fields, steep terrain, extreme cold and wet conditions.

These design features, fine-tuned over 20 years, give extremely low heading errors - far better quality than walking mode and certainly higher resolution than any airborne survey.  Productions rates of 40-80 km per day can be acquired depending on terrain, with readings at 10x per second.

This spring we applied a combined cesium-mag and TDEM system on a large-scale project in Nunavut.

The image below shows the magnetometer sleigh followed by the TDEM sleigh on the horizon:


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ClearView is a registered member of ISNetworld.  Many clients use ISNetworld to choose their suppliers so that they can be sure all requirements are met.  For example, ClearView carries $5-million coverage for commercial liability and professional insurance.


Many cesium magnetometer surveys are carried out without cut lines.  The onboard GPS is used for navigation and positioning.  Data are recorded at 10x per second.  Therefore, lines are spaced 50-metres apart in areas where drills are standing by.  This allows for the interpretation of 'breaks' in the mag which can act as conduits for gold and other economic mineralization.  Gone are the days where traditional 'proton precession' style magnetometers are used for serious high resolution and high quality data.  IP/resistivity survey lines can be 'targeted' to specific areas (e.g., breaks in the magnetics contours) to reduce costs by exploring more efficiently!


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ClearView completed several 4-Pin Wenner Array surveys as per ANSI/IEEE Std. 81-1983 and others as a guide (i.e., IEEE 80-2000 and ASTM G57 for soil resistivity test).  The work was carried out so that appropriate electrical grounding design for planned facilities within highly congested industrial areas in downtown Toronto could be done.

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ClearView Geophysics recently completed Resistiviy Imaging, EM, and GPR surveys in the arctic.  The purpose of the work was to determine depth to bedrock and areas of potential frost heave from ice wedges to assist with plant design and construction.  The work was done with multiple GPR frequencies and resistivity electrode spacings using a Syscal Pro with 96 electrodes.  This combined-methods approach, typical on ClearView projects, makes it possible to provide a more definitive interpretation of the sub-surface.  High near surface resolution and good depth penetration to over 60 metres were obtained over an area of 25 hectares in less than 2 weeks.




ClearView owns Sensors & Software 100 MHz, 250 MHz, 500 MHz and 1000 MHz systems for full resolution and depth penetration.  Sensors & Software EKKO_Project Ver.5 software along with in-house software is used for processing, interpretation and presentation of results.


The spectral really helps with quickly weeding unstable decays versus good ones, and the good ones are used to help with fine-grained/disseminated vs. Coarse-grained/linked sulphides.’


The main thing with our cross-hole IP system is that it’s simple, with single wires down each hole, and there are many readings taken at different angles making the inversion converge very quickly even with tight constraints (e.g., UBC low chi factor).  Just a couple of off-the-shelf winches and new IP wire.  We mark the wire at 10-metre intervals as slippage on the counter is inevitable.’

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Jerome, Geophysics Technician, thought the sounds of an IP crew were kind of repetitive.



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