Soil - Electrical Resistivity
Types of soil and resistivity.
The resistivity values of soil may be useful when designing earth-electrode systems.
Soil | Mean Value of Resistivity (ohm m, Ω m) |
---|---|
Clay, compacted | 100 - 200 |
Clay, soft | 50 |
Clayely sand | 50 - 500 |
Humus, leaf mold | 10 - 150 |
Granite | 1500 - 10000 |
Granite, modified | 100 - 600 |
Jurassic marl | 30 - 40 |
Limestone, fissured | 500 - 1000 |
Marl | 100 - 200 |
Mica schist | 800 |
Peat, turf | 5 - 100 |
Sandstone | 1500 - 10000 |
Sandstone, modified | 100 - 600 |
Shist, shale | 50 - 300 |
Siliceous sand | 200 - 300 |
Soil, chalky | 100 - 300 |
Soil, swampy | 1 - 30 |
Stony sub-soil, grass-covered | 300 - 500 |
Stony ground | 1500 - 3000 |
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