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Proactive disclosure Print version   | |  The Trans-Hudson / Superior Margin Metallotect The Trans-Hudson / Targeted Geoscience Initiative - Assean Lake Aeromagnetic Survey in Manitoba
Backgrounder The results of a 2004 high-resolution aeromagnetic survey of the Assean Lake area of Manitoba, carried out under contract by Goldak Exploration Technology Ltd. of Saskatchewan, have been released at the 36th Manitoba Mining and Minerals Convention in Winnipeg, Manitoba. The survey was initiated by NRCan's Geological Survey of Canada, in partnership with the Manitoba Geological Survey, to acquire geophysical data over approximately 1000 km2 in the Assean Lake area, over the northern extent of the Superior Boundary Zone in Manitoba. Survey Results The survey consists of approximately 29,000 line kilometres of digitally acquired profile data with traverse lines spaced 400m apart oriented North to South. The nominal altitude is 150m (GPS drape controlled). The survey is located between Gillam and Thompson, Manitoba, including NTS 1:50 000 map sheets 64A 1-4, 6-10 and 54D 5 and 6. The survey results include a series of 11-1:50 000 aeromagnetic maps (Total Magnetic Intensity and Vertical Gradient) for a total of 22 maps. This also includes digital line and grid data. This survey will provide invaluable insights on the geology and structure of the circum-Superior Ni-Cu-PGE metallotect, in a poorly exposed section between Thompson and the northwest limit of the highly prospective Fox River greenstone belt. Results from this survey will be used, in conjunction with ongoing mapping programs, to produce new geological maps and will have an immediate impact on understanding the distribution of the rocks that host the ores of the Thompson Nickel Belt. The survey results can be viewed at GSC Ottawa; GSC Calgary; GSC Pacific ; GSC Atlantic; GSC Quebec; and Manitoba Industry, Economic Development and Mines, Winnipeg. Gridded digital data for this survey are available for download at no cost through the Geoscience Data Repository for Earth Science Sector geophysical and geochemical data. Digital maps in PDF format are also available at no cost. Digital data may be obtained from the Geophysical Data Centre, Ottawa. Economic Implications The city of Thompson, with INCO's nickel smelter, relies heavily on mining for its economic prosperity. The long-term viability of this resource-based economy will depend on successful exploration to replace ore reserves as they are mined-out. New geological maps, enhanced by the new detailed geophysical data base, should spur exploration by the private sector and could lead to new discoveries that will maintain and enhance a vibrant mining economy in the region. In addition to nickel, the survey area is known to host gold occurrences and is highly prospective for kimberlites, the host rocks for diamonds. Funding The aeromagnetic survey and production of the maps were funded by NRCan's Targeted Geoscience Initiative (TGI) 2003-2005 and by Manitoba Industry, Economic Development and Mines. TGI funded 96% of the total funding of $308,700. TGI was established in 2000 to promote Canada's geoscience knowledge base as a competitive advantage in attracting investment in mineral exploration. In addition, researchers from the Manitoba Geological Survey, Waterloo University, University of Alberta, and the University of Manitoba have conducted bedrock mapping projects in the region designed to make maximum use of the new aeromagnetic survey. Funding for these projects, totalling approximately $1 million over three years (2003-2005), include significant contributions from Manitoba Hydro and NSERC. Mining and Minerals Convention The theme for this year's Manitoba Mining and Minerals Convention held November 18-20 in Winnipeg, Manitoba, is "Target Your Exploration." The international convention attracts some 700 delegates, featuring 27 presentations and an extensive exhibit area showcasing geoscientific poster presentations, mineral properties available for option, and a wide range of innovative products. More information is available on the Manitoba Mining and Minerals Convention Web site. Contacts
Manitoba on-site: Maurice Coyle
Ric Syme
Tim Corkery
David Corrigan
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