Regosols

Regosols, of the azonal soils, are characterized by well to imperfectly drained mineral soils which lack of horizon development or the minimal A and B horizon development (Soil Science Glossary, 1976), which indicate the relatively unstable conditions that destroy soil profile zonation (McGregor, 1984). Regosols are common over a wide range of ecological conditions; there is low to moderate development of regosols in shrubs, and low development under trees, dryland grasses and wetland grasses (Soil Science Glossary, 1976).

Regosols are found in the Montane, Subalpine and Alpine subregions of Kananaskis country (Archibald, Kiappstein and Corns, 1996), under open forests and grasslands, and in areas of rolling ridges and lower slopes of mountains with bedrock close to surface. The parent materials are commonly moraine and colluviam, underlain by bedrock at different depths (Archibald, Kiappstein and Corns, 1996). Kondla (1978) notes that regosols occur on relatively young surficial deposits at higher elevations, such as colluvial slopes and active fluvial landforms (Achuff 1994).

Humic regosols can be found in Alpine locations, and may occur on river terraces with a widely fluctuating water table, creating a mull humus horizon (Williams, 1990). Orthic Regosols are found on most cobbly fluvial and glaciofluvial terraces, on south/southwest facing slopes (Williams, 1990, McGregor, 1984). Cumulic Regosols are formed by mass wasting, and are common on grassy south facing slopes and sandy fluvial terraces and fans (Williams, 1990, McGregor, 1984).

 

Regosol Alluvial

 

Regosol Marine

   

 

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