This GIS dataset comprises the linear geological features of Map 180, Geology of the Precambrian Shield in northeastern Alberta, NTS 74M and NTS 74L, published by the Alberta Geological Survey. The data are created in ArcInfo and output for public distribution in shapefile format.

This GIS dataset comprises the structural measurement features of Map 180, Geology of the Precambrian Shield in northeastern Alberta, NTS 74M and NTS 74L, published by the Alberta Geological Survey. The measurements are of general foliation and gneissosity in the bedrock. The data are created in ArcInfo and output for public distribution in shapefile format.

This GIS dataset comprises the metamorphic overlay features of Map 180, Geology of the Precambrian Shield in northeastern Alberta, NTS 74M and NTS 74L, published by the Alberta Geological Survey (polygon features). The data are created in ArcInfo and output for public distribution in shapefile format.

This dataset shows 1:250,000 scale faults/lineaments of the Precambrian Shield area of Saskatchewan.This dataset shows the 1:250,000 scale bedrock geology faults/lineaments of the Precambrian Shield area of Saskatchewan. The faults/lineaments layer has been merged from the 1:250,000 scale Compilation Bedrock Geology map series.  **Please Note – All published Saskatchewan Geological Survey datasets, including those available through the Saskatchewan Mining and Petroleum GeoAtlas, are sourced from the Enterprise GIS Data Warehouse. They are therefore identical and share the same refresh schedule.

This GIS dataset comprises the bedrock contacts (polygon outline features) of Map 180, Geology of the Precambrian Shield in northeastern Alberta, NTS 74M and NTS 74L, published by the Alberta Geological Survey. The data are created in ArcInfo and output for public distribution in shapefile format.

This GIS dataset comprises the geological polygon features of Map 180, Geology of the Precambrian Shield in northeastern Alberta, NTS 74M and NTS 74L, published by the Alberta Geological Survey (polygon features). The data are created in ArcInfo and output for public distribution in shapefile format.

This dataset is the bedrock geology layer of the Precambrian shield area of the Province of Saskatchewan merged from 1:250,000 scale compilation map series.This dataset shows 1:250 000 scale bedrock geology of the Precambrian Shield area of the Province of Saskatchewan. Mapping in support of the dataset includes many years of field observations which were compiled at 1:250 000 scale and integrated into this dataset. The data was created as a file geodatabase feature class and output for public distribution. **Please Note – All published Saskatchewan Geological Survey datasets, including those available through the Saskatchewan Mining and Petroleum GeoAtlas, are sourced from the Enterprise GIS Data Warehouse. They are therefore identical and share the same refresh schedule.

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.

Precambrian Structure Map

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 Map 537. The dataset displays Alberta shield locations where we took rock samples for uranium-lead dating. Alberta Geological Survey compiled the data from published literature. Attributes include crystallization and/or cooling age, mineral analyzed, sample identifier and rock type, literature reference, and analytical method. This is a digital version of the data given in Table 1 of Map 537.