Location: Batesford
Australian Soil Classification: Vertic (& Sodic), Hypercalcic, Black DERMOSOL
General Landscape Description: Undulating rises.
Site Description: Upper slope adjacent to open depression.
Geology: Basalt.
SW96 Landscape
NOTE: This profile was described as part of a catena transecting a small open depression in the basalt which has intersected the underlay sedimentary (Moorabool Viaduct) material.
See also SW97, SW98, SW99, SW100.
Soil Profile Morphology:
Surface Soil
Ap | 0-15 cm | Greyish brown (10YR5/2 moist); hardsetting surface condition; loam; pH 5.6; gradual change to: | SW96 Profile - Note: Surface stripped from soil profile. |
Subsoil | |||
B21tg | 15-40/70 cm | Very dark grey (10YR3/1 moist) to greyish brown (2.5Y5/2 moist); fine to medium yellowish brown (10YR5/8 moist) mottles in centre of peds; mottles increase with depth; light clay; medium angular blocky structure; some slickensides (<100 mm); pH 8.1: | |
B22k/R | 40/70-200+ cm | Calcareous clay and rock matrix; basalt ranging from massive fractured to rubbly (colluvial). |
pH | Salinity Rating | |||
Surface (A1 horizon) | Moderately Acid | Low | Non-Sodic | None1 |
Subsoil (B21 horizon) | Moderately Alkaline | Low | Sodic | None2 |
1 Moderate dispersion after remoulding. 2 Strong dispersion after remoulding. |
The surface is moderately acid. The subsoil is moderately alkaline. | Salinity rating is low throughout the profile. | The soil is non sodic in the surface and sodic in the subsoil. | The clay content increases markedly at the A/B boundary. |
Horizon | Sample Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | Nitrogen % | Organic Carbon % | Exchangeable Cations | |||
Ca | Mg | K | Na | |||||||
meq/100g | ||||||||||
A | 0-15 | 5.6 | 4.9 | 0.15 | 0.3 | 3.2 | 5.8 | 5 | 1.1 | 0.59 |
B21tg | 25-40 | 8.1 | 7.1 | 0.14 | 12 | 12 | 0.74 | 1.8 |
Horizon | Sample 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) |
A | 0-15 | <10 | 12 | 22.8 | 12.4 | 21 | 37 | 11 | 28 |
B21tg | 25-40 | 40 | 21.3 | 16 | 27 | 9 | 42 |