Victorian Resources Online (archived)
MM388
| Site: MM388 | Land Unit: Wongan Plains |
| Aust. Soil Class.: Bleached-Mottled, ?, Grey CHROMOSOL (confidence level 3) | |
| General Land Unit Description: The unit consists of Grey Chromosols or Sodosols on the near level basalt plain in the Lake Wongan area to the north of Streatham. Minor areas of acidic soils also occur on these plains. |
Site Description:
| Geology: Quaternary basalt | Landform pattern: Level to gently undulating plain |
| Position in landscape: Flat | Internal drainage: Imperfectly drained |
| A1 | 0-20 cm | Dark brown (10YR3/3) clay loam, ferromanganiferous nodules are common, pH 4.8. Clear transition to: |
| A2 | 20-45 cm | Light grey (10YR7/2), clay loam, sporadically bleached when dry, ferromanganiferous nodules are common. Sharp transition to: |
| Subsoil | ||
| B21 | 45-70 cm | Pale brown (10YR6/3) medium clay, red mottles (2.5YR4/6), moderate blocky structure (10-20 mm), pH 6.2. Gradual transition to: |
| B22 | 70+ cm | Yellowish brown (10YR5/4) medium clay, yellowish brown mottles (10YR5/8), moderate blocky structure (10-20 mm), pH 6.3. |
Key profile features:
- Strongly acidic topsoil
- Bleached A2 horizon
- Mottled subsoil
- Ferromanganiferious are common
