Location: Speed | Australian Soil Classification: Hypercalcic, Subnatric, Yellow SODOSOL (thick sandy surface horizons). |
General Landscape Description: Midslope of a north-south beach ridge (4% slope). | |
Geology: Quaternary Woorinen Formation overlying Tertiary Parilla Sandstone. |
Site MP31 & MP32 Landscape |
A1 | 0-10 cm | Brown (7.5YR4/4); sand; loose surface condition; structureless (single grain); very weak consistence moist; pH 7.9; abrupt and smooth change to: | Site MP32 Profile |
A21 | 10-30 cm | Strong brown (7.5YR5/6); sand; structureless (single grain); very weak consistence moist; pH 7.7; abrupt and smooth change to: | |
A22 | 30-35 cm | Reddish yellow (7.5YR6/6) conspicuously bleached (7.5YR8/4d); sand; structureless (single grain); loose consistence moist; pH 8.7; sharp and smooth change to: | |
Subsoil | |||
B21 | 35-50 cm | Reddish yellow (7.5YR6/6 and 6/8); sandy clay loam (clayey); weakly structured; very firm consistence moist; pH 8.6; gradual and smooth change to: | |
B22 | 50-60 cm | Yellowish brown (10YR5/6); sandy clay loam (clayey); massive; strong consistence dry; pH 9.5; contains very few (< 2%) soft calcareous nodules; clear and wavy change to: | |
B23k | 60-110 cm | Reddish yellow (7.5YR7/6) with sub-dominant red (2.5YR5/8) mottles; sandy clay; weakly structured; very firm consistence dry; contains very many (>50%) soft calcareous nodules; pH 9.5; gradual change to: | |
B24k | 110+ cm | Yellowish red (5YR5/8) with codominant reddish yellow (7.5YR6/6) mottles; sandy clay loam (clayey); weakly structured; strong consistence dry; fine-earth carbonates common (10-20%) in tongues; pH 9.8. |
The surface is slightly alkaline. The upper subsoil is strongly alkaline, becoming very strongly alkaline at 50 cm. | The salinity rating is low throughout the profile. |
The surface soil is non- sodic. The subsoil is sodic. | The clay content increases in the subsoil. |