Australian Soil Classification: Mottled, Mesotrophic, Brown CHROMOSOL (confidence level 1)
General Landscape Description: Low hills.
Site Description: Upper slope (1%)
Land Unit: Nareen Granite
Geology: Ordovician granite / granodiorite
General Land Unit Description: This site is located on a granite low hill. The soils have granite parent material occurring at around one metre. Further down the slope there is a band of trachyte (GL162) outcropping. The area is a mix of geologies. This is the major soil type representing the Nareen Granite land unit, although it has not been mapped as granite due to restrictions of scale.
Soil Profile Morphology:
Horizon | Depth (cm) | |||
A1 | 0-10 | Very dark greyish brown (10YR3/2); coarse sandy loam; weak medium subangular blocky structure; very firm consistence, dry; pH 5.9; gradual change to: | ||
A2 | 10-30 | Dark greyish brown (10YR4/2); sandy loam; weak to massive structure; very firm to strong consistence; pH 5.2; clear change to: | ||
B21 | 30-50 | Yellowish brown (10YR5/4), with many distinct coarse red (2.5YR4/6) mottles; medium heavy clay; moderate fine subangular blocky structure; strong consistence, dry; organic staining present; pH 5.6; gradual change to: | ||
B22 | 50-85 | Yellowish brown (10YR5/6), with many distinct medium dark yellowish brown (10YR4/6) mottles; medium clay; strong fine lenticular structure; strong consistence, dry; pH 6.0; diffuse change to: | ||
B23 | 85-100 | Light olive brown (10YR5/6), many prominent medium dark yellowish brown (10YR4/6) mottles; medium clay; moderate to strong lenticular to polyhedral structure (10-50 mm), consistence firm, dry; pH 6.2; gradual change to: | ||
BC | 100-150 | Weathered granite; gradual change to: | ||
C | 150-170 | Weathered granite. |
- | pH | Salinity | ||
Surface Soil (A1 horizon) | Moderately Acid | Low | Non Sodic | None |
Subsoil (30-50 cm) | Moderately Acid | Very Low | Non Sodic | None |
Deeper Subsoil (85-100 cm) | Slightly Acid | Low | Non Sodic | None |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC dS/m | Organic Carbon % | Total Nitrogen % | Exchangeable Aluminium ppm | Exchangeable Acididty meq/100g | Exchangeable Cations | Coarse Sand (0.2-2.0 mm) % | Fine Sand (0.02-0.2 mm) % | Silt (0.002-0.02 mm) % | Clay (<0.002 mm) % | Field Capacity % w/w | Wilting Point % w/w | |||
Ca | Mg | K | Na | |||||||||||||||
meq/100g | ||||||||||||||||||
A1 | 0-10 | 5.9 | 5.6 | 0.14 | 5.4 | 0.34 | <10 | 9.6 | 6.3 | 1.3 | 0.74 | 0.2 | 37 | 25 | 9 | 21 | 36.7 | 12.3 |
A2 | 10-30 | 5.2 | 4.5 | <0.05 | 32 | 7.4 | 1.7 | 0.81 | 0.15 | 0.07 | 34 | 32 | 9 | 22 | 18.3 | 8.3 | ||
B21 | 30-50 | 5.6 | 4.9 | <0.05 | 14 | 8.7 | 3.3 | 3.8 | 0.21 | 0.17 | 12 | 15 | 7 | 66 | 31.0 | 21.2 | ||
B22 | 50-85 | 6.0 | 5.9 | 0.06 | <10 | 7.1 | 3.4 | 4.1 | 0.19 | 0.24 | 6 | 13 | 8 | 73 | 37.2 | 24.6 | ||
B23 | 85-100 | 6.2 | 6.0 | 0.06 | 3.4 | 0.14 | 0.31 | 43.5 | 26.3 |