Nazko Brunisol

Soil Site Details: Nazko 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: Dry and cool continental
BC Biogeoclimatic Zone: Sub-Boreal Spruce

Location: Nazko Cone, 75km west of Quesnel, BC
City, Region, Country: Quesnel, British Columbia, Canada
Lat / Long: 52.55/ -123.44

Soil Classification

Soil Order: Brunisol
Great Group: Eutric Brunisol
Subgroup: Orthic Eutric Brunisol
Soil Series:
Classification Code: O.EB
Soil Horizons Present: LFH, Ah, Bm1, Bm2, Bm3, C
Diagnostic Horizon 1: Bm1
Diagnostic Horizon 2: Bm2
Diagnostic Horizon 3: Bm3
Diagnostic Horizon 4:

Land Form

Land Form:
Parent Material: Volcanic tephra
Elevation (m): 900
Topography: Inclined
Affected by Glaciation: Yes


Climate Zone: Dry and Cool Continental
Mean Annual Temperature (C): 2.3
Minimum Annual Temperature (C): -12.9
Maximum Annual Temperature (C): 13.9
Mean Annual Precipitation (mm): 442

Land Use

Current Land Use: 2nd growth forest
Original Vegetation: Whitespruce, lodgepole pine
Current Vegetation: Whitespruce, lodgepole pine

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)). This site has volcanic parent material (basalt cinder), as it is situated near Nazko Cone. The soil at this site falls into the Orthic Eutric Brunisol Subgroup. These soils have a high degree of base saturation, particularly in the B horizon, with the C horizon being commonly calcareous.

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Soil Morphology
Soil Texture of Diagnostic Horizon or Prevailing Texture: Sandy Loam to Loam
Soil texture horizons: Sandy loam (Ah), Loamy (Bm1), Loam (Bm2), Loam (Bm3), Loam (C)
Soil structure horizons: Subangular blocky
Forest Humus Form: Mor
Presence of Charcoal:
Presence of Coatings:
Soil Formation Processes
Primary Soil Process Group: Transformation
Primary Soil Process: Podzolization
Secondary Soil Process:


Brunisol, from

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