Location: Seaton | Australian Soil Classification: Haplic, Eutrophic, Red DERMOSOL |
Geology: Tertiary basalt. | General Landscape Description: Low hills. |
Soil Mapping Unit: Seaton. | Site Description: Roadside cutting on mid-slope of hill (SE aspect). |
Site GP84 Landscape |
Surface Soil | Site GP84 Profile | ||
A1 | 0-20 cm | Brown (7.5YR5/4); light medium clay; strong medium, parting to strong fine, parting to strong very fine blocky structure; pH 7.1; gradual change to: | |
Subsoil | |||
B21 | 20-50 cm | Reddish brown (5YR4/4); medium clay; strong coarse, parting to strong medium blocky and strong fine polyhedral structure; friable when moist; pH 7.7; gradual change to: | |
B22 | 50-80 cm | Reddish brown (5YR4/4); medium clay; strong coarse to medium blocky structure; pH 8.2: | |
C | 80+ cm | Weathered basalt. |
Horizon | pH | Salinity Rating | ||
Surface (A1 horizon) | Slightly Alkaline | Very Low | Non-Sodic | None |
Subsoil (B21 horizon) | Slightly Alkaline | Very Low | Non-Sodic | None |
Deeper subsoil (at 50-80 cm) | Moderately Alkaline | Very Low | Non-Sodic | None |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-20 | 7.1 | 6.4 | 0.09 | 20 | 11 | 0.32 | 0.76 | |
B21 | 20-50 | 7.7 | 7.1 | 0.13 | 23 | 13 | 0.31 | 1.4 | |
B22 | 50-80 | 8.2 | 7.6 | 0.14 | 30 | 16 | 0.25 | 1.7 |
Horizon | Horizon Depth (cm) | Exchangeable Aluminium mg/kg | Exchangeable Acidity meq/100g | Field Capacity pF2.5 | Wilting Point pF4.2 | Coarse Sand (0.2-2.0 mm) | Fine Sand (0.02-0.2 mm) | Silt (0.002-0.02 mm) | Clay (<0.002 mm) | Bulk Density Kg/L |
A1 | 0-20 | 5.7 | 32.2 | 18.3 | 4 | 40 | 23 | 30 | 3.1 | |
B21 | 20-50 | 39.3 | 23.6 | 5 | 29 | 19 | 43 | 4.0 | ||
B22 | 50-80 | 47.9 | 28.5 | 6 | 23 | 19 | 48 | 2.9 |