102

101

100

101

102

103

104

105

Resistivity (Ω∙m)

Unconsolidated sediments

Soil

Clay

Sands and gravel

Sedimentary rocks

Shale

Sandstone

Limestone

Ignous metamorphic rocks

Granite

Altered granite

Basalt

Graphytic Schist

Base metal sulfides

Pyrite

Pyrrhotite

Galena

Chalchopyrite