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Arctic Geophysics Inc.

PO Box 31441 RPO Stn Main, Whitehorse, Yukon Y1A 6K8
Heidi Kulcheski
867-456-4343
867-456-4243
Arctic Geophysics Inc. specializes in geo- physical services for the mining industry. We offer GPS-based data acquisition, in-field processing, and professional interpretation.
Placer Exploration with Geophysics 2D Resistivity
For placer exploration we have perfected the use of 2D Resistivity. After seven years of intensive measuring practice in the Northwest, Resistivity has proven itself to be a most reliable, powerful method to investigate placer ground. With 2D Resistivity we detect the following subsurface characteristics: Bedrock depth and topography: channels, reefs, benches, terraces; Sedimentary stratigraphy: muck, gravel types, sand, silt, clay; Permafrost and groundwater table; Mining history: former pits, settling ponds, technogenic gravels
In the Resistivity model the different underground zones are material-dependently differentiated according to their electrical conductivity. Because Resistivity is not a time domain method and is measuring a material property, the profiles can usually be well interpreted even in ground with disturbing influences such as discontinuous permafrost, large boulders, or clay etc.. In over 90% of our Resistivity profiles which have been proven by drilling, trenching or mining, the bedrock depth interpreted by our team has been confirmed.
In the case of existing drill holes, our Resistivity profiles can be used to convert the drilling information into a two dimensional view. But usually our customers first commission us to do a survey whose results are then verified by drilling or trenching at appropriate spots in the profiles. A few drill holes are usually sufficient to confirm the high information content of a series of 2D profiles along a valley.
Magnetics
Paleoplacers, mostly located in former channels, can rapidly be mapped with Magnetics. The measurability of gold placers depends on the ratio of the depth of the placer deposit to the concentration of signal inducing accessory minerals, especially magnetite. The mapping of placer gold deposits with Magnetics usually works fine in depth of 1m to 8m. Therefore this method is only suitable for prospecting in areas with shallow bedrock.
Mining Exploration Projects
Geophysical methods are a time-saving and cost-effective way for the primary exploration of virgin ground for placer and quartz mining. With portable equipment it is possible to map and image large areas of ground in a short time, even under rough wilderness conditions. The comprehensive information of a geophysical survey allows a first calculation and determines the directed economic use of further prospecting methods such as soil sampling, drilling, trenching, and shafting.
Permafrost Monitoring
2D Resistivity is an excellent method to identify permafrost in overburden and bedrock. In a 2D Resistivity profile permafrost shows up as an area of distinctively increased resistivity which makes it easy to differentiate the permafrost distribution in the subsurface. Beginning in 2007 we have measured hundreds of resistivity profiles in the permafrost areas of the Yukon and Northern BC. The experience we have gained doing this allows us to identify permafrost and interpret complex patterns of discontinuously frozen conditions. It also allows us to identify the slightest changes in the permafrost in repeated profiles.
The accuracy of the interpretation of scientific data can never be guaranteed since there is always a margin of error involved. Having said this, drilling has verified our profile interpretations with an accuracy of greater than 90%.
Consulting
Our area of expertise is the exploration of placer and mineral deposits for the mining industry of the Yukon, BC and NWT. Our academic staff provides over 25 years of prospecting experience across the North. Our extensive study of North American geology and close collaboration with numerous mining companies enable us to render professional and conscientious advice about the prospecting of precious metals and minerals found in primary and secondary deposits.

Type of Business

Natural resource industries
Mining (except oil and gas)
Quarry or sand pit
Support activities for mining or oil and gas extraction
Professions
Other professional, scientific, or technical services
Services - Business services
Consultation, environment
Consultation, science and technology

Yukon Communities

Beaver Creek
Burwash Landing
Carcross
Carmacks
Dawson City
Destruction Bay
Eagle Plains
Faro
Haines Junction
Keno
Marsh Lake
Mayo
Old Crow
Pelly
Ross River
Stewart Crossing
Swift River
Tagish
Teslin
Watson Lake
Whitehorse