Cayuse Mid Brunisol

Soil Site Details: Cayuse Mid Brunisol

Soils on this site are Brunisols. Brunisolic soils are relatively young, and can be viewed as an early stage in the evolutionary sequence of soil development, starting with unweathered parent material and ending with a mature soil (e.g., Podzol). The name Brunisol originated from the French word brun meaning brown.

Basic Facts

Soil Order: Brunisol
Ecosystem: Coniferous forest
Climate Zone: Continental
BC Biogeoclimatic Zone: Interior Cedar-Hemlock

Location: 5 km on Cayuse Forestry Service Road at Arrow Lake
City, Region, Country: Castlegar, BC, Canada
Lat / Long: 49.25711/ -117.584

Soil Classification

Soil Order: Brunisol
Great Group: Dystric Brunisol
Subgroup: Eluviated Dystric Brunisol
Soil Series:
Classification Code: E.DYB
Soil Horizons Present: LF, Ahe, Bm1, Aeb, Bm2, BC
Diagnostic Horizon 1: Bm1
Diagnostic Horizon 2: Bm2
Diagnostic Horizon 3:
Diagnostic Horizon 4:

Land Form

Land Form:
Parent Material: Glacial till
Elevation (m): 1010
Affected by Glaciation: Yes


Climate Zone: Continental
Mean Annual Temperature (C):
Minimum Annual Temperature (C):
Maximum Annual Temperature (C):
Mean Annual Precipitation (mm):

Land Use

Current Land Use: Forestry
Original Vegetation: Cedar and Hemlock
Current Vegetation: Coniferous Forest

Technical Description
This soil is in the Brunisolic Order. Brunisols are relatively young soils that can be thought of as a transition stage between Regosols and other, more developed soils (e.g. Podzol, Luvisol). The diagnostic horizon is usually a Bm horizon > 5 cm thick, which has undergone minimal pedogenic alteration (alternatively, another B horizon could be present depending on the accumulation of clay (Btj) or amorphous Fe/Al (Bfj)).

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Soil Morphology
Soil Texture of Diagnostic Horizon or Prevailing Texture:
Silt loam to loam
Soil texture horizons: Silt loam (Ae), Loam (Bm)
Soil structure horizons: Weak granular (in all mineral horizons)
Forest Humus Form:
Presence of Charcoal:
Presence of Coatings:
Soil Formation Processes
Primary Soil Process Group: Translocation
Primary Soil Process: Clay Redistribution
Secondary Soil Process:


Brunisol, from

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