20210625 20085300 1.0 TRUE Soil Texture This map illustrates the distribution of soil parent material textures in the agricultural region of Alberta. Soil texture is defined by the relative proportions of the sand, silt and clay particles present. Soil textures are identified by classes using the Soil Texture Triangle illustrated below. The Soil Texture Triangle identifies the textural class of a soil at the intersection of the percent sand (x-axis) and the percent clay (y-axis). The percent silt of the soil is the remainder to add up to 100 percent. For presentation on this map, the texture classes of soil parent materials identified with each Agricultural Region of Alberta Soil Inventory Database (AGRASID) soil landscape polygon were combined into four more general groups - fine, medium, moderately coarse and very coarse. These are represented on the map by solid colors when the areal extent of the texture group occupies more than or equal to 60 percent of the soil area. Textural groupings with patterned symbols are complex areas where texture groups occupy more than or equal to 30 percent, but less than 60 percent of the area. Copyright Government of Alberta