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TitleSupplementing public geoscience knowledge with archived industry data: an example from northwest Canada
AuthorFinley, T D; Fallas, K M; MacNaughton, R B
SourceGeological Survey of Canada, Open File 8188, 2017, 20 pages, (Open Access)
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatpdf
ProvinceNorthwest Territories
NTS106B/14; 106B/15; 106B/16; 106G/02; 106G/03
AreaMackenzie Mountains
Lat/Long WENS-131.5000 -130.0000 65.0833 64.8333
Subjectsregional geology; structural geology; bedrock geology; lithology; structural analyses; satellite imagery; Operation Norman; Gayna Formation; Rio Tinto claim; geoscience mapping; information resources; archival data; archival maps; digitization; geographical information systems (GIS); georeferencing; data processing; databases; datasets; open government; open data; strategic mapping; data quality; cost-benefit analysis
Illustrationslocation maps; photographs; geological sketch maps; screen captures
ProgramMackenzie Corridor, Shield to Selwyn, GEM2: Geo-mapping for Energy and Minerals
Released2017 01 16
AbstractMineral industry exploration data archived in the public domain are an underutilized source of geoscience knowledge in Canada. Efforts to rescue archived data can contribute to the repository of public geoscience knowledge, thereby meeting the objectives of the Government of Canada's Open Data Initiative and increasing the cost effectiveness of modern mapping projects. This report documents a data rescue exercise dealing with a high quality set of maps produced by a 1975 Rio Tinto exploration program in the Mackenzie Mountains, NWT, (RT claim group, northern NTS 106B and southernmost NTS 106G) and now residing in the public domain. These maps were digitized in preparation for Geological Survey of Canada (GSC) field work in the Mackenzie Mountains. Line-work, lithological information, and structural data were captured in a GIS database. These archival maps cover a small area in much greater detail than was possible for the regional maps published by the GSC. As a result, the digitized dataset will allow for strategic selection of sites requiring a revisit, potentially streamlining the GSC's present and future mapping campaigns in the region. The high density of structural measurements contributed to clearer understanding of map unit distribution during GSC field work in 2016, and may contribute to a detailed structural analysis of the region. The 1975 Rio Tinto exploration program cost over $450,000 CAD ($2 million in 2016 dollars). The cost of rescuing the data was minor by comparison, consisting mainly of the salary required to pay a junior scientist to carry out the digitizing.
Summary(Plain Language Summary, not published)
The report documents a data-rescue exercise dealing with a set of high-quality mineral industry exploration maps from the Mackenzie Mountains. These maps and an accompanying report were archived by the Northwest Territories Geoscience Survey and subsequently were scanned and made available for free public download. The maps provide very detailed geological mapping data for a group of mineral claims in an area currently being remapped as part of the Geo-mapping for Energy and Minerals Program. The present report describes the steps involved in migrating the data from analog formats that are not machine-readable (i.e., scans of paper maps) to GIS formats, and incorporating them in a GSC project geodatabase. The potential benefits and limitations of such efforts also are discussed.