|
RESISTIVITY
OF DIFFERENT SOILS
|
SOIL |
RESISTIVITY
(Ohm-cm) [Range] |
| Surface soils, loam, etc. |
100 - 5,000 |
| Clay. |
200 - 10,000 |
| Sand and gravel. |
5,000 - 100,000 |
| Surface limestone. |
10,000 - 1,000,000 |
| Limestones. |
500 - 400,000 |
| Shales. |
500 - 10,000 |
| Sandstone. |
2,000 - 200,000 |
| Granites, basalts, etc. |
100,000 |
| Decomposed gneisses. |
5,000 - 50,000 |
| Slates, etc. |
1,000 - 10,000
|
Effect
of Electrolytic Solutions
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