Vancouver Island North Regional Project

Key Researcher(s):  Precision GeoSurveys Inc.

Project ID:  2018-055

Key Research Organization(s):  Precision GeoSurveys Inc.

Project Location:  Vancouver Island

Strategic Focus Area:  Minerals

Summary



This project is generating valuable new earth science information for an area on northern Vancouver Island by flying an airborne geophysical survey and using the collected data to update geological maps. The new information can then be used to assess the mineral potential of the area and to guide more informed decisions about potential mineral resource development on northern Vancouver Island. Results from the Vancouver Island North project will be published in January 2020 at the AME Roundup conference in Vancouver.

Project Open House Meetings

Join us at one of our Open House Meetings in September to learn more about the Vancouver Island North Regional Project and to answer any questions you may have.

Campbell River Thank you to everyone that came to the Campbell River open house on September 11, 2019. Couldn't make it? The presentation is below.

View Campbell River Open House Presentation

Port McNeill Join us on September 17, 2019 from 5:15pm. to 6:45pm. at West Coast Helicopters, 1011 Airport Road, Port McNeill River. ***Please note this venue is not wheelchair accessible.***

Register for Port McNeill Open House


 

The Need

Vancouver Island has a long history of mining and mineral exploration, but some areas remain relatively under-explored or have not been actively explored for many years. This project will cover an area at the north end of the island where packages of rocks known to host mineralization in nearby areas occur. Similar projects, such as Geoscience BC’s adjacent Northern Vancouver Island (NVI) project undertaken in 2012-2013 in partnership with the Island Coastal Economic Trust, have sparked exploration, discovery and new economic activity in similar under-explored areas.

Up-to-date, unbiased earth science information is essential to inform decisions relating to the development of BC’s mineral resources. Long-term demand for the metals and minerals that might be uncovered in this area is growing because they are important in the production of renewable energy, batteries and our everyday electronic devices.

 

Project Goals

This project will:

  • Produce new research using the latest methods to update geological maps;
  • Identify regional geological and structural mineral exploration targets;
  • Provide economic stimulation; and
  • Engage communities, share information, and identify potential training opportunities.

Project Benefits

The new geoscience information generated by this project may spark a new wave of mineral exploration activity in this region of BC. The information generated by this project will help the exploration sector, communities, Indigenous groups and governments to make informed decisions about responsible natural resource development.

Survey Area

As the map above shows, the airborne geophysical survey will cover a 6,127 square kilometre area stretching from Port McNeill in the north to Tahsis in the south, covering portions of the Regional Districts of Strathcona and Mount Waddington. It will not fly over Woss Lake, Nimpkish Lake or Schoen Lake Provincial Parks.

How will the data be collected and used?

The project was announced in March 2019. Following requests for feedback from the mineral development sector, community leaders and Indigenous groups, work started in August 2019.

The airborne geophysical survey is collecting collect information about the magnetic properties of the rocks below the ground and the radiometric properties of rocks and soils near the surface.

Precision GeoSurveys, the contractor selected to fly the airborne geophysical survey, began flying one helicopter over the survey area in early August 2019 from Port McNeill and from Woss. The helicopter is easily identified by three ‘booms’ containing magnetic sensors – one on each side and one at the front. It will be flying along lines spaced 250 metres apart and at a constant height of 80 metres but will rise to 300 metres over communities. It will not fly over larger parks. The flights are expected to be complete in early October, 2019.

The magnetic survey will map out the rock units below the surface that contain magnetic minerals, mostly magnetite, but also the iron oxide minerals hematite, maghemite, limonite, and some sulphide minerals such as pyrrhotite. These minerals disrupt the Earth’s magnetic field, and the magnetometer connected to the survey helicopter measures these subtle variations in the Earth’s magnetic field.

After this magnetic data is collected and processed, the shapes of these magnetic rock units can help geologists understand the structure of the rocks several kilometers below and identify areas that are worthy of further investigation.

The radiometric survey will map the distribution of naturally occurring radiometric isotopes in rocks and soils within about 30 centimetres of the Earth’s surface. As potassium, uranium and thorium naturally decay, they release gamma rays with characteristic energy signatures that the survey equipment attached to the helicopter detects.

Once processed, the results of the radiometric survey can be used to update geological maps and, in some cases, may be used to directly detect mineral deposits.

Results from the project will be announced at the AME Roundup conference in Vancouver in January 2020.

Photo Credit: Harmen Keyser, Precision GeoSurveys

Photo Credit: Harmen Keyser, Precision GeoSurveys

Deliverables