This dataset accompanies Open File Report 2009-02. Between 1971 and 1983, the Alberta Research Council created a series of hydrogeological maps of Alberta. The geologists examined the sediment types present and used existing water well information to assign yield values to distinct zones within the mapped areas. They also looked at the materials, generally to a depth of 305 metres (1000 feet) below ground surface, and added the yields of the sediments encountered within this interval to arrive at a yield value for the whole. Alberta Geological Survey compiled the shapefiles for the yield polygons, digitized by the Prairie Farm Rehabilitation Agency, and then digitized the remaining linework for the remaining map areas. Afterwards, we created a geodatabase of the yield polygons for the entire province and assigned yield values to the polygons based on the original maps. We also assigned the most likely formation name, age and lithology to the yield polygon.

This GIS dataset is part of a digital compilation of the Precambrian geology of the Alberta portion of the Canadian Shield and Athabasca Basin. It is one of the datasets used to produce Alberta Geological Survey (AGS) Map 537. For the Alberta shield, the compilation integrates detailed mapping by both AGS and the Geological Survey of Canada (GSC) at scales ranging between 1:31,680 and 1:250,000. Geochronological data and interpretations also helped prepare this dataset. For the Athabasca Basin, the compilation incorporates the geology of the basin presented in the ExTech IV volume, published in 2007 by the GSC. This dataset tries to present the geological information in a neutral manner, unbiased by the three mutually exclusive, regional tectonic concepts existing at the time of compilation. Users are encouraged to view AGS Map 537, which contains overviews of the geology of the respective areas and a complete reference list. The line feature dataset came from existing, though largely unpublished, digital sources. Areas of the shield are mainly from digitized versions of AGS Maps 180 and 25: the shield north of Lake Athabasca and south of the Athabasca Basin, respectively.

Point layer of points of interest and place names. Schools, pools, municipal buildings, etc. **Collection context** Manual collection and additions/withdrawals according to procedures between departments. **Collection method** Computer-aided mapping. **Attributes** * `ID_PDI` (`integer`): Identifier * `GROUPE_PDI` (`varchar`): Group * `NO_PDI` (`varchar`): Number * `PDI_NAME` (`varchar`): Name * `NO_CIVIC` (`varchar`): Civic number * `ODO_INDEX_LONG` (`varchar`): Long index odonym * `ODO_COURT_COMPLET` (`varchar`): Full short odonym * `ODO_LONG_COMPLETE` (`varchar`): Full long odonym * `ODO_INDEX_COURT` (`varchar`): Short index odonym * `URL` (`varchar`): URL * `CHARACTER` (`varchar`): Character * `POLICE` (`varchar`): Police * `scale` (`integer`): Scale * `USE` (`varchar`): Utility * `NOTES` (`varchar`): Notes * `SOURCE` (`varchar`): Source * `DATE_CREATION` (`smalldatetime`): Created on * `DATE_MODIFICATION` (`smalldatetime`): Modified on * `USER_MODIFICATION` (`varchar`): Modified by * `ICONE` (`varchar`): Icon For more information, consult the metadata on the Isogeo catalog (OpenCatalog link).**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Reprocessing of magnetic data for Yukon was performed between November 2016 and March 2017. Aeromagnetic data were compiled, data of different resolutions were merged, and a series of images individually levelled for each map sheet were produced. For each 250k-scale map, the following magnetic derivative maps were produced: 1. Residual Total Magnetic Field; 2. Reduced-to-Pole Magnetic Field (RTP); 3. First Vertical Derivative of the Reduced-to-Pole Magnetic Field (RTP_VD); and 4. Tilt Derivative of the Reduced-to-Pole Magnetic Field (RTP_TDR). These maps are provided as pdfs, geotiffs and Geosoft grid files. Colour ramps/legends are provided for each map.

Sectors targeted for urban densification. Polygons resulting from an analysis by the urban planning department and identified as areas conducive to urban densification. **Collection context** Areas determined by the urban planning department. Manual analysis and limits according to an anthropogenic constraint, a street or a zoning limit. **Collection method** Technical drawing and computer-aided mapping. **Attributes** * `ID_ZONAGE` (`long`): Zoning ID * `NUM_ZONE` (`varchar`): Zone number * `GROUPE_USA` (`varchar`): Use group * `LABEL` (`varchar`): Label * `DATE_CREAT` (`date`): Creation date * `DATE_MODIF` (`date`): Date of modification * `USER_MODIF` (`varchar`): Modified by * `Source` (`varchar`): Source * `GRILLE_URL` (`varchar`): Grid of uses For more information, consult the metadata on the Isogeo catalog (OpenCatalog link).**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

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This GIS dataset depicts the locations of thalwegs (paleo-channels) incised in the bedrock surface of NTS map area 84L ( line features). The data are created in ArcInfo format and output for public distribution in Arc export (E00) and shapefile formats.

Aurora Geosciences Ltd was contracted to perform a review of publicly available digital magnetic geophysical data submitted with assessment reports to develop standardized products and compilations. Data submitted prior to March 2015 were considered. Individual assessment report data were levelled and integrated with 1:250 000 compilations. Four gridded PDFs have been produced (residual total magnetic field, reduced to pole, vertical derivative and tilt derivative). Original 250k geophysical data can be found in YGS Open File 2017-43.

Grid shift files for use with an NTv2 algorithm. The grid spacing is 30”. Supports transformations in New Brunswick between datums: 1. NAD27 and NAD83(CSRS); and 2. ATS77 and NAD83(CSRS).

This GIS dataset is part of a GIS version of AGS Map 150, Sheets 1 - 6, as mapped at 1:250,000-scale by Bayrock and Reimchen. The data represent the glacial features component of the maps.