Map Symbol: Qs
Geology: Late Pleistocene to Holocene, Molineaux - Lowan Sands.
Landform: Dune crests and slopes. The shallow phase mapping unit may occur on slopes.
Occurrence of Quantong Sand (Qs): This occurs as a co-dominant soil mapping unit in the dune and swale landscape unit and as a sub-dominant soil unit in the river frontage landscape unit. There is a minor occurrence in the prior stream flood plain landscape unit. It usually occupies the crests of linear east-west dunes. The soil unit is found throughout the Quantong and Haven areas, mainly west of the Henty Highway.
Occurrence of the Shallow Phase (Qssp): The shallow phase indicates that the surface soil only goes to approximately 75 cm in depth. This unit also occurs in the dune and swale and river frontage landscape units. It usually occupies the mid-slope and sometimes the foot slope positions of the east-west dunes and is found in the Quantong and Haven areas south west and south of Horsham.
Representative Soil Type: Site IS26
Vegetation: Areas mapped as Quantong sand and its shallow phase may have been occupied by the heath woodland and tall woodland formation characterised by the Brown Stringybark (E. baxterii), Apple Box (E. aromaphloia), Yellow Box (E. melliodora) and Yellow Gum (E. leucoxylon) association.
Generalised Soil Description:
Surface Soil
A1 | 0 - 10/30 cm | Dark greyish brown (10YR4/2) sand; loose consistence dry; sharp change to:
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A21 | 10/30 - 100/110 cm | Brown (10YR5/3) [becoming light yellowish brown (10YR6/4) below 45 cm and pale brown (10YR6/3) below 105 cm], conspicuously bleached, sand; loose consistence dry; gradual change to:
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A22 | 100/110 - 120/150 cm | Pale brown (10YR6/3) conspicuously bleached (10YR8/3d) loamy sand; sharp change to: |
Subsoil
B21 | 120/150 - 215 cm | Olive grey (5Y5/2) with strong brown (7.5YR5/8) mottled sandy clay; becoming light olive (5Y6/2) with strong brown (7.5YR5/8) mottled medium clay below 160 cm; contains a slight (2-10%) amount of carbonate below 190 cm. |