Victorian Resources Online (archived)
SWSL889
Australian Soil Classification: Bleached-Ferric, ?, Brown CHROMOSOL (confidence level 2).
General Landscape Description: Undulating rises
Site Description: Flat
Land Unit: Macarthur Basalts
Geology: Quaternary basalt
General Land Unit Description: The undulating rises to the west of Macarthur consist of Mottled Brown Chromosols with sporadically bleached subsurface horizons. Black Endohypersodic Vertosols are predominant on the flats which are the prominent landscape element of this unit. Minor shallow Mottled Brown Chromosols occur on slopes and crests also.
Soil Profile Morphology
Surface
| A1 | 0-20 cm | Dark reddish brown (5YR3/3) fine sandy loam, hardsetting surface, pH 5.2. Clear transition to: |
| A2 | 20-30 cm | Yellowish red (5YR4/6) fine sandy clay loam, bleached (5YR7/3) when dry, many ferromanganiferous nodules. Sharp transition to: |
| Subsoil | ||
| B21 | 30-50 cm | Strong brown (7.5YR4/6) medium clay, strong blocky structure (5-10 mm), pH 6.2. Gradual transition to: |
| B22 | 50+ cm | Yellowish brown (10YR5/6) medium clay, red mottles (2.5YR4/6), strong blocky structure (5-10 mm), pH 6.4. |
Key profile features:
- Strongly acidic topsoil
- Hardsetting topsoil
- Bleached A2 horizon
- Many ferromanganiferious nodules in A2 horizon
- Mottled subsoil
Soil Profile Characteristics:
- | pH | Salinity |
Surface Soil (A1 horizon) | Strongly Acid | Low |
Subsoil (B21 Horizon) | Slightly Acid | Very Low |
Chemical and Physical Analysis:
Horizon | Horizon Depth (cm) | pH (water) | EC dS/m |
A11 | 0-20 | 5.2 | 0.06 |
A12 | 20-30 | ||
B21 | 30-50 | 6.2 | 0.04 |
B22 | 50+ | 6.4 | 0.05 |
