River valley (Symbol: rv)
Site 136 (Rees unpublished) | EG120
Geology
Recent alluvium.
Landform
Enclosed narrow valley flats.
Native vegetation
Riparian forest, valley grassy forest or riparian woodland.
Soil
Few observations were made. The soils that were examined had strongly to moderately acidic very dark grey clay loam to sandy loam surfaces, generally deep, overlying dark grey mottled clays.
Site 136 (Rees unpublished)
| Location: Bonang | Geo. Ref. 653600E 5882700N |
| Australian Soil Classification: Redoxic HYDROSOL | Deep loamy swamp soil |
| General landscape description: Valley flat |  |
| Geology: Recent alluvium | |
| Site description: Level | |
| Land use: Cleared (Marsh species) | |
| Native vegetation: Valley grassy forest | |
| Mapping unit: river valley | |
Soil profile morphology
| Surface soil | | |
A | 0 – 70 cm | Dark greyish brown (10YR4/2); sandy loam; weak coarse subangular blocky structure; clear change to: |
Subsoil | | |
B2 | 70 – 150+ cm | Dark greyish brown (10YR4/2) few fine orange mottles; medium clay with silt; strong very coarse subangular blocky structure. |
Soil profile characteristics
| Horizon | Depth | Field texture | pH water | Exch Al | Org C | Exchangeable cations cmol (+)/kg | Ca:Mg | ||||||
| cm | | | ppm | % | Ca | Mg | K | Na | Total | H | CEC | |
| A | 0-70 | SL | 5.6 | 20 | | 2.6 | 2.5 | 0.2 | <0.1 | 5.3 | 15.3 | 20.6 | 1.0 |
| B2 | 70-150 | MC | | | | 8.3 | 5.6 | 0.2 | 0.3 | 14.4 | 13.7 | 27.8 | 1.5 |
Site EG120
| Location: Delegate River | Geo. Ref. 651500E 5893600N |
| Australian Soil Classification: Oxyaquic HYDROSOL | Deep silty swamp soil |
| General landscape description: Valley flat | |
| Geology:Recent alluvium | |
| Site description: Road reserve, level (land is periodically waterlogged) | |
| Land use: Adjoining land is grazed | |
| Native vegetation: Riparian woodland | |
| Mapping unit: river valley | |
Soil profile morphology
| Surface soil | | |
A1 | 0 – 25 cm | Very dark greyish brown (10YR3/2); silty loam; (pH 5.0); clear change to: |
A2 | 25 – 40 cm | Greyish brown (10YR5/2) silty clay loam; apedal; firm consistence dry; sharp change to: |
Subsoil | | |
B2 | 40 – 80+ cm | Grey (10Y/5/1; medium clay; (pH 5.8). |
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