Canadian black loam, also known as black soil or chernozem, is a rich, dark-colored soil type found in the Canadian prairies, characterized by high organic matter content, excellent water-holding capacity, and fertility, making it ideal for agriculture. 
Here's a more detailed look at Canadian black loam:
Composition:
Black loam is a soil type that contains a mix of sand, silt, and clay, along with a high amount of organic matter (humus). 
Origin:
It is a type of chernozem soil, which are the great grassland soils of the Canadian prairies. 
Characteristics:
Color: Dark brown or black, indicating high organic matter content. 
Texture: Loam soil has a good balance of sand, silt, and clay, resulting in a fine, slightly damp texture that's ideal for plant growth. 
Nutrient Content: Rich in nutrients and has a high capacity for holding water and nutrients, making it very fertile. 
Structure: Loam soil has a good, open, granular, or crumb structure that provides good aeration and water-holding capacity. 
Uses:
Agriculture: Ideal for growing a wide variety of crops, including grains, grasses, and other agricultural products. 
Gardening: Excellent for top dressing lawns, flower beds, and vegetable gardens. 
Landscaping: Used as topsoil for creating landscapes. 
Soil Zones:
The color of the Ah (surface mineral horizon) varies depending on the climate and vegetation, creating distinctive soil zones in the Canadian Shied. 
Other names:
Black soil, regur soil, or black cotton soil