Group: Nagambie Landcare Group | Australian Soil Classification: Episodic, Epipedal, Brown VERTOSOL. |
Northcote Factual Key:Ug 5.2 / Ug 2 intermixed | Great Soil Group: brown clay |
General Landscape Description: Drainage depression within an alluvial plain which originally supported River Red Gum (Eucalyptus camaldulensis). |
GN19 Landscape | Section of discontinuous bleached A2 horizon |
A1 | 0-10 cm | Dark greyish brown (10YR4/2); medium heavy clay; rusty root channel mottling; moderate coarse blocky structure; strong consistence dry; pH 5.7; clear change to: | GN19 Profile |
A2 | 10-15 cm | Pale brown (10YR6/3) conspicuously bleached (10YR8/1d); fine sandy clay loam; discontinuous and variable in depth; pH 6.3: | |
Subsoil | |||
B21 | 15-50 cm | Brown (10YR5/3); medium heavy clay; very coarse prismatic, breaking down to moderate coarse polyhedral structure; very strong consistence dry; pH 7.5; gradual change to: | |
B22 | 50-90 cm | Brown (10YR5/3); medium heavy clay; moderate very coarse lenticular structure (with shiny faced peds and slickensides); very firm consistence moist; pH 8.0; gradual change to: | |
B23 | 90+ cm | Yellowish brown (10YR5/4); medium heavy clay; contains a slight (2-5%) amount of gypsum; pH 7.7. | |
This soil occurs within the Wormangal Wetland Clays soil/geomorphic unit mapped by Skidmore (1993). |
pH | Salinity Rating | |||
Surface (A1 horizon) | moderately acid | very low | sodic | slight1 |
Subsoil (B21 horizon) | slightly alkaline | very low | sodic | strong |
Deeper subsoil (at 1 m) | slightly alkaline | high | strongly sodic | strong |
1 Moderate dispersion after remoulding. |