Location: Galah-Tiega | Australian Soil Classification: Brown CHROMOSOL |
Northcote Factual Key: Db 1.53 | |
General Landscape Description: Upper slope of a gentle rise known as the Limestone Site within the Mid Mallee Land System. |
MP1 Landscape |
A1 | 0-10 cm | Strong brown (7.5YR5/6); sandy loam; hardsetting surface condition; massive in structure; weak consistence dry; highly calcareous; pH 8.7; sharp and smooth change to: | |
A2 | 10-20 cm | Reddish yellow (7.5YR6/6) with a conspicuous bleach (7.5YR7/4d); light sandy clay loam; massive in structure (possibly cemented by carbonate and clay); strong consistence dry; contains a few (2-10%) carbonate nodules (2-6 mm in size); highly calcareous; pH 9.0; sharp and smooth change to: | |
A3 | 20-25 cm | Strong brown (7.5YR5/6); sandy loam; granular structure; weak consistence dry; contains very few (<2%) carbonate nodules; moderately calcareous; pH 8.9; abrupt and smooth change to: | |
Subsoil | |||
B21 | 25-40 cm | Strong brown (7.5YR5/8); sandy clay loam; massive in structure; cracking observable only on disturbance; firm consistence dry; slightly calcareous; pH 9.0; clear and smooth change to: | |
B22k | 40-60 cm | Reddish yellow (7.5YR6/6); sandy loam; massive in structure; contains a common (10-20%) amount of soft carbonate; carbonate tubular structures occur in the lower parts of this horizon as well as ovate longitudinal reddish yellow (5YR5/6) lenses which are associated with the carbonate; very highly calcareous; pH 9.0; gradual and smooth change to: | |
B23k | 60-85 cm | Yellowish red (5YR5/6); fine sandy clay loam; contains many (20-50%) soft carbonates; very highly calcareous; pH 9.0; gradual and smooth change to: | |
B24k | 85-130 cm | Strong brown (7.5YR5/6); fine sandy light clay; very strong 2 cm cast structures occasionally occur; contains many (20-50%) soft carbonates; very highly calcareous; pH 9.3; smooth change to: | |
2A1 | 130+ cm | Reddish yellow (7.5YR6/6); loamy sand; slightly calcareous; pH 10.0. |
The soil is strongly alkaline throughout, becoming very strongly alkaline at 1 metre depth. | The salinity rating is very low to low throughout the soil profile. |
| The clay content is very low throughout the profile. |