Digital Data 2007-0018
Author(s) | Date | 2007-04-30 |
This data comprises the polygon features from AGS Map 213, 'Quaternary Geology, Central Alberta', compiled by I. Shetsen. Field work was conducted between 1981 and 1983, and the map was published in 1987 at 1:500,000 scale. See AGS Map 213 for data sources used in the compilation.