Location: Speed. | |
Australian Soil Classification: Eutrophic, Subnatric, Red SODOSOL (medium sandy surface), overlying an older Red KUROSOL. | |
General Landscape Description: Level area between north-south stranded beach ridges. | |
Geology: Quaternary Woorinen Formation overlying Tertiary Parilla Sandstone. |
Site MP31, MP32 & MP33 Landscape |
A11 | 0-10 cm | Dark red (2.5YR4/8); sand; soft surface condition moist; structureless (single grain); very weak consistence moist; pH 7.4; abrupt and smooth change to: | Site MP33 Profile |
A12 | 10-30 cm | Dark red (10R4/8); clayey sand; massive; weak consistence dry; contains very many (>50%) sandstone gravel fragments (5 mm-15 cm in size); pH 7.6; abrupt and smooth change to: | |
Subsoil | |||
B21 | 30-40 cm | Dark red (2.5YR4/8); light medium clay; moderate coarse blocky structure (rough-faced peds); strong consistence dry; pH 8.0; abrupt and smooth change to: | |
D1 | 40-60 cm | Dark red (2.5YR4/8); medium clay; strong coarse blocky, breaking down to strong medium blocky structure (smooth-faced peds); strong consistence dry; pH 5.6; gradual and smooth change to: | |
D2 | 60-75 cm | Dark red (2.5YR4/8) with reddish yellow (7.5YR6/6) patches; light clay; strong coarse blocky, parting to strong fine blocky structure; strong consistence dry; pH 4.8; gradual and smooth change to: | |
D3 | 75-120 cm | Light grey (5Y7/1) with brownish yellow (10YR6/8) mottles; heavy clay; strong very coarse prismatic, parting to strong coarse blocky structure; very strong consistence dry; contains few (2-5%) gypsum crystals in pockets; pH 4.8; clear change to: | |
D4 | 120+ cm | Light grey (2.5Y7/2); sandy clay; very strong consistence dry; pH 4.8. |
The surface soil is slightly alkaline. Upper subsoil is moderately alkaline. The deeper subsoil becomes very strongly acid with depth. | The salinity rating is very low for the upper profile becoming moderate at about 70 cm. |
The surface soil is non-sodic. The subsoil is sodic throughout. |