Australian Soil Classification: Melacic - Mottled (& Reticulate), Eutrophic, Brown CHROMOSOL
General Landscape Description: Gently inclined undulating rises.
Site Description: Crest above gentle slope.
Geology: Tertiary Hanson Plain Sand
Soil Profile Morphology:
|A1||0-35 cm||Very dark grayish brown (10YR3/2 moist, 10YR5/2 dry); light fine sandy clay loam; weakly pedal; polyhedral (5-20 mm); very few (<2%), medium (2-10 mm) ironstone nodules; firm consistence; pH 5.3; clear and smooth change to:|
SW66 Profile. Note: Surface (A1) horizon has been stripped from the soil profile.
|A2||35-55 cm||Yellowish brown (10YR5/4 moist), conspicuously bleached (10YR6/4 dry); sandy clay loam; apedal, massive; few (2-5%), medium (2-10 mm) ferruginous nodules; firm consistence; pH 5.5; abrupt and smooth change to:|
|B21||55-95/105 cm||Strong brown (7.5YR5/8 moist) to yellowish brown (10YR5/8 dry); with many (~30%) dark yellowish brown (10YR4/6 moist) to yellowish brown (10YR5/6 dry) mottles; light medium clay; strongly pedal, very coarse (50-100 mm) polyhedral, parting to medium (5-20 mm) fine to very fine (2-5 mm) polyhedral structure; common (~10%) medium (2-10 mm) ferruginous nodules; very firm consistence; pH 5.9; clear and wavy change to:|
|95/105-110 cm||Yellowish red (5YR4/6 moist) and red (10R4/6 and 4/8 moist); light to medium clay; strongly pedal, coarse (20-50 mm), parting to medium to fine (5-20 mm) polyhedral structure; few (~5%) medium (2-10 mm) ferruginous nodules; very firm consistence; pH 6.0; clear smooth change to:|
|110-130 cm||Thin (~5 mm) grayish brown (2.5Y5/2 moist) clay lamellae (10-20 mm apart) fringed horizontally by a dark yellowish brown (10YR4/6 moist and dry) sand matrix in a red (10R4/8 moist) ferruginised sand matrix; moderately pedal, coarse polyhedral (20-50 mm), parting to medium to fine (5-20 mm) polyhedral structure; very firm consistence; gradual and wavy change to:|
|130-155 cm||Thick [up to 15 mm] light gray (10YR7/1 moist and dry) and brownish yellow (10YR6/8) clay lamellae (10-20 mm apart) in a red (10R4/8 moist) and brown (10YR4/3) ferruginised sand matrix; weakly pedal; medium to fine (5-20 mm) polyhedral structure; weak to firm consistence; abrupt and wavy change to:|
|155-200 cm||Thick [10-15 mm], clay lamellae (50-400 mm apart) in a ferruginised sand matrix; abrupt and smooth change to:|
|200 cm+||Mottled yellowish brown (10YR5/8 moist) and red (10R4/8 moist); ferruginised coarse sand.|
(at 100-110+ cm)
|The surface is strongly acid. The subsoil is moderately acid.||Salinity rating is very low throughout the profile.||The soil is non sodic throughout.||Exchangeable Aluminium levels are high in the surface soil.||Clay levels jump markedly at the surface / subsoil boundary.|
(0.2- 2.0 mm)
(0.02- 0.2 mm)
(0.002- 0.02 mm)