Australian Soil Classification: Vertic (& Calcic), Mottled-Hypernatric, Black SODOSOL
General Landscape Description: Alluvial plain.
Site Description: Flat.
Geology: Alluvium derived from Basalt and Moorabool Viaduct.
Soil Profile Morphology:
|Ap||0-10 cm||Very dark greyish brown (10YR3/2 moist); fine sandy clay loam; granular polyhedral structure; firm consistence dry; pH 6.4:|
SW95 Profile - Note: Ap horizon stripped from soil profile.
|B21tss||10-55/60 cm||Black (2.5Y2/1); heavy clay; very coarse prismatic, parting to medium prismatic, parting to coarse angular blocky structure; rigid consistence dry; slickensides (30-100 mm) at base; pH 8.3; gradual change to:|
|B22gt||55/60-100 cm||60-75 cm depth: mottled very pale brown (10YR8/3-7/3 moist) with yellowish brown (10YR5/4-5/6 moist) in ped interiors; fine sandy light clay; prominent black vertical root channels and infill between peds; some small manganiferous accumulations; |
75-100 cm depth: dark yellowish brown (10YR4/4-4/6 moist); light medium clay; medium prismatic, parting to fine angular blocky structure; sand and small hard calcium carbonate and silicone (CaCO3/Si) nodules (<5%); pH 8.9; diffuse and wavy change to:
|B23gk||100-130 cm||Greyish brown (2.5Y5/2 moist); light clay (silty); medium to coarse irregular prisms, parting to medium angular blocky structure; moderately calcareous; frequent infill into root channels (~50 mm) intervals; pH 8.9:|
|B24||130+ cm||Mottled light yellowish brown (10YR6/4); sandy clay; weak blocky structure.|
(at 45-60 cm)
|1 Complete dispersion after remoulding. 2 Strong dispersion after remoulding could be due to the high levels of salt.|
|The surface is slightly acid. The subsoil is moderately alkaline becoming strongly alkaline at depth.||Salinity rating is low in the surface. The subsoil is low to moderate becoming very high in the deeper subsoil.||The soil is non sodic in the surface and strongly sodic in the subsoil.||The clay content increases markedly at the A/B boundary.|
(0.2- 2.0 mm)
(0.02- 0.2 mm)
(0.002- 0.02 mm)