LWA15
Note: This profile is in draft format only, will be finalised in the near future
| Location: Sea Lake | Australian Soil Classification: Calcic, Subnatric, Red SODOSOL |
| General Landscape Description: Gently undulating plains with hummocky rises | Geology: Quaternary alluvial and aeolian deposits |
 LWA15 Landscape |
Soil Profile Morphology:
Surface Soil
| Ap | 0-10 cm | Brown (7.5YR4/4); loamy sand; loose consistence (dry); non-calcareous; pH 7.1; clear change to: |  LWA15 Profile |
| A12 | 10-15 cm | Brown (7.5YR4/4); loamy sand; massive; very weak consistence (dry); non-calcareous; pH 6.9; abrupt change to: | |
| A2 | 15-18 cm | Light yellowish brown (10YR6/4) with pinkish (7.5YR7/3) mottles; sand; massive; non-calcareous; pH 7.6; sharp and wavy change to: | |
| Subsoil | |||
| B21 | 18-45 cm | Light brown (7.5YR6/4) with yellowish red (5YR4/6) mottles; sandy clay; moderate, very coarse (>100 mm) columnar, parting to weak to moderate, coarse (20-50 mm) angular blocky structure; strong consistence (dry) at cap, very firm to strong consistence (dry); non-calcareous; pH 9.6; clear change to: | |
| 2B2 | 45-80 cm | Light reddish brown (2.5YR6/3) with many (40%) reddish yellow (5YR6/8) mottles; medium heavy clay; moderate coarse (50-100 mm) prismatic, parting to strong coarse (50-100 mm) angular blocky and strong fine (5-10 mm) polyhedral structure; soft calcareous segregations common (5-10%) with some hard calcareous nodules; manganese flecks present; pH 9.6; abrupt change to: | |
| D1 | 80-120 cm | Brownish yellow (10YR6/6 and 6/8) with many (20%) light grey (10YR7/1) mottles; gravel with clay; massive; firm to very firm consistence (dry), partially cemented as a whole; many (30-40%) rounded and sub-rounded small quartz gravel (2-6 mm); pH 9.3; gradual change to: | |
| D2 | 120+ cm | Light grey (10YR7/1) with brownish yellow (10YR6/8) mottles; gravel with clay; massive; firm to very firm consistence (dry), partly cemented as a whole; many (30-40%) rounded and sub-rounded quartz small quartz pebbles (2-6 mm); pH 7.4. | |
Key Profile Features:
Soil Profile Characteristics:
 | pH | Salinity Rating | ||
Surface (A1 horizon) | Slightly Acid | | | None |
Subsoil (B21 horizon ) | Very Strongly Acid | | | Complete |
Deeper subsoil (120+ cm) | Slightly Alkaline | | | |
 |
Horizon | Horizon Depth | pH (water) | pH CaCl2 | EC 1:5 | Org. Carbon mg/kg | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
Meq/100g | |||||||||
Ap | 0-10 | 7.1 | 6.9 | 0.1 | 0.46 | 2.2 | 0.67 | 0.44 | 0.11 |
A12 | 10-15 | 6.9 | 6.5 | 0.07 | 0.36 | 1.4 | 0.39 | 0.24 | 0.18 |
A2 | 15-18 | 7.6 | 7.2 | 0.06 | | 1 | 0.34 | 0.12 | 0.15 |
B21 | 18-45 | 9.6 | 8.7 | 0.24 | | 4.9 | 6 | 0.8 | 2.9 |
2B2 | 45-80 | 9.6 | 8.9 | 0.53 | | 3.7 | 16 | 2 | 8.5 |
D1 | 80-120 | 9.3 | 8.3 | 0.28 | | 0.94 | 8.7 | 0.81 | 6.6 |
D2 | 120+ | 7.4 | 6.4 | 0.22 | | 0.53 | 4.8 | 0.42 | 5.6 |
Horizon | Horizon Depth | Boron mg/kg | Field pF2.5 g/100g | Wilting Point pF4.2 g/100g | Coarse Sand (0.2-2.0mm) % | Fine Sand (0.02-0.2mm) % | Silt (0.002-0.02mm) % | Clay (<0.002mm) % |
Ap | 0-10 | 0.6 | 5.3 | 1.7 | 64 | 30 | 4 | 2 |
A12 | 10-15 | 0.5 | 5.2 | 1.3 | 61 | 33 | 4 | 2 |
A2 | 15-18 | 0.4 | 8.1 | 1 | 43 | 52 | 3 | 3 |
B21 | 18-45 | 7.1 | 21.6 | 10.9 | 38 | 34 | 7 | 21 |
2B2 | 45-80 | 18 | 43.1 | 27.3 | 25 | 15 | 9 | 47 |
D1 | 80-120 | 9.7 | 26.6 | 13.3 | 65 | 5 | 6 | 23 |
D2 | 120+ | 4 | | | | | | |
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