Translations:Dictionary:Anisotropy (electrical)/5/en

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See dar Zarrouk. The anisotropy of induced polarization in rocks is less than the anisotropy of resistivity. In layered rocks the resistivity parallel to the layering is less than that perpendicular to the layering. Anisotropy as measured in a borehole is caused by cyclic thin sequences of alternating sand and shale, sorting of sand grains, and fractures (healed or fluid-filled).