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Yeungroon Series
Soils included in this series have distinct texture contrasts between hard setting surface soil horizons and moderately to strongly pedal clayey subsoils. Conspicuously bleached A2 horizons are present. The uppermost subsoil layer, that is at least 15 cm thick, is mottled and dominantly red. The soil reaction trend is alkaline.
In the present survey, this series includes one soil type:
Yeungroon Sandy Clay Loam (YE scl)
Profile Morphology:
Surface Soil - A1 horizon
- About 10 cm thick.
- Dark brown to dark reddish brown.
- Sandy clay loam.
Surface Soil - A2 horizon
- About 15 cm thick.
- Reddish brown to yellowish red (moist); conspicuously bleached near white (dry).
- Sandy clay loam.
Subsoil
- Mottled red or yellowish red with dark brown to dark greyish brown. At depth the main colours gradually become yellower and/or paler.
- Medium to heavy clay.
Soil Inclusions:
- Trace to slight amounts of soft and/or hard CaCO3 usually occur at about 40 cm.
- Slight to light amount of quartz fragments may occur in the deep subsoils.
Analytical data for selected depths down the profile:
Depth | pH | Total Soluble Salts | Sodium Chloride | Moisture Retention @ 15-Bar | Moisture Retention @ 1/3-Bar |
% | % | % | % | ||
A | 7.1 | 0.019 | * | 5.1 | 13.2 |
B | 8.9 | 0.133 | 0.055 | 25.3 | 46.1 |
C | 9.5 | 0.229 | 0.088 | 22.4 | 40.5 |
* Sodium chloride contents were not measured and are expected to be very low (based on TSS < 0.05%).
Occurrence:
Yeungroon Sandy Clay Loam usually occurs on the lower and intermediate slopes in the hilly outwash areas (see Upper Outwash Slopes and Lower Outwash Slopes).
