CASE HISTORY: Aggregate mapping
LOCATION: Central Alberta, Canada
OBJECTIVES: Identify lateral and vertical extent of high resistivity anomalies that could be indicative of gravel.
An OhmMapper apparent resistivity survey was undertaken at a site in central Alberta to identify and delineate an aggregate deposit. The results show that the apparent resistivity method has defined the lateral and vertical extent of the main aggregate zone as well as several smaller high-resistivity regions on the periphery of the survey area that may be associated with smaller pockets of coarse-grained material. The system applied to the survey, i.e. OhmMapper, has proven to be a fast, easy and cost-effective technique to obtain both lateral and vertical extents of the economically viable aggregates.