Location: Walpeup. | Australian Soil Classification: Epibasic, Argic, Calcic CALCAROSOL (very deep sandy profile). |
Northcote Factual Key: Uc 3.31. | Geology: Quaternary aeolian deposits. |
General Landscape Description: East-West dune. |
MP3 Landscape |
A1 | 0-15 cm | Brown (7.5YR5/4); loamy sand; structureless (single grain); weak consistence dry; non calcareous; pH 7.8; abrupt and wavy change to: |
MP3 Profile |
A2 | 15-35 cm | Strong brown (7.5YR5/8) with sporadically bleached reddish yellow (7.5YR7/6d) layers; loamy sand; massive; weak consistence dry; contains very few (< 2%) fine-earth carbonates; pH 8.2; sharp and irregular change to: | |
Subsoil | |||
B21 | 35-55 cm | Reddish yellow (7.5YR6/7); clayey sand; massive; firm consistence dry; very few (< 2%) fine-earth carbonates; pH 8.5; sharp and smooth change to: | |
B22 | 55-80 cm | Reddish yellow (7.5YR6/8) and yellowish red (5YR5/8) in bands; clayey sand; massive; firm consistence dry; fine-earth carbonates common (10 %); pH 8.9; sharp and irregular change to: | |
B23k | 80-100 cm | Reddish yellow (7.5YR6/6) with occasional reddish yellow (7.5YR6/8) bands; sand; massive; fine-earth carbonates common (10 - 20%); pH 9.3; sharp and irregular change to: | |
B24 | 100+ cm | Layers of yellowish red (5YR5/8) clayey sand and reddish yellow (7.5YR6/8) sand; massive; weak consistence dry; few (2 - 10%) fine-earth carbonates; pH 9.1. |
The surface soil is slightly alkaline. The upper subsoil is moderately alkaline, becoming very strongly alkaline with depth. | The level of soluble salts is extremely low throughout the profile. |
The profile is non-sodic throughout. | The clay content is low in this profile and increases in the subsoil. |