EGN771
Australian Soil Classification: Arenic RUDOSOL
Map Unit: Recent marine
Previous Site Name: 771
Geology: Holocene marine sediments
Soil Profile Morphology:
Surface Soil
| Flood deposit | 0-4 cm | Fine sandy loam; pH 8.3; changes to: | |
| A1 | 4-6 cm | Fine sand; pH 8.8; changes to: | |
Subsoil |  | | |
| C | 6-10 cm | Fine sand; pH 9.0; changes to: | |
| C | 10-20 cm | Coarse sand; pH 9.1; changes to: | |
| C | 20-30 cm | Coarse sand; pH 9.1; changes to: | |
| C | 50-60 cm | Coarse sand; pH 8.4; changes to: | |
| D | 70-80 cm | Coarse sand; pH 8.1. | |
Key Profile Features:
- Sand textures throughout.
- The EC values indicate the soil is saline, alkaline and would only support salt marsh species.
- Shells are present throughout the profile.
Chemical and Physical Analysis:
Horizon | Horizon Depth (cm) | pH (water) | EC dS/m | Organic Carbon % | Total Nitrogen % | Exchangeable Cations | Gravel % | Coarse Sand (0.2-2.0 mm) % | Fine Sand (0.02-0.2 mm) % | Silt (0.002-0.02 mm) % | Clay (<0.002 mm) % | |||
Ca | Mg | K | Na | |||||||||||
meq/100g | ||||||||||||||
Flood deposit | 0-4 | 8.3 | 6.3 | 2.0 | 0.18 | 7.8 | 7.8 | 1.0 | 4.0 | 5# | 22 | 44 | 1 | 5 |
A1 | 4-6 | 8.8 | 1.7 | 0.52 | 0.05 | 4.8 | 2.7 | 0.4 | 1.3 | 2# | 33 | 54 | 1 | 2 |
C | 6-10 | 9.0 | 0.87 | 0.24 | 0.03 | 3.1 | 1.2 | 0.2 | 0.4 | 3# | 24 | 67 | <1 | 1 |
C | 10-20 | 9.1 | 0.61 | 0.08 | 0.01 | | | | | 4# | | | | |
C | 20-30 | 9.1 | 0.62 | 0.05 | 0.01 | | | | | 3# | | | | |
C | 50-60 | 8.4 | 1.0 | | | 3.2 | 0.7 | 0.2 | 0.3 | 3# | 56 | 36 | <1 | 2 |
D | 70-80 | 8.1 | 2.1 | | | 6.1 | 2.4 | 0.8 | 1.4 | 43# | 58 | 19 | 2 | 9 |
Profile Described By: Bruce Nicholson, 1978.
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