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Detailed studies of anomalous conductors in otherwise homogeneous media have been modelled. Vertical contacts form common geometries in galvanic studies when describ- ing geological formations with different electrical conductivities on either side. However, previous studies of vertical discontinuities have been mainly concerned with isotropic environments. In this paper, we deal with the effect on the electric potentials, such as mise-`a-la-masseanomalies,duetoaconductornearaverticalcontactbetweentwoaniso- tropic regions. We also demonstrate the interactive effects when the conductive body is placed across the vertical contact. This problem is normally very difficult to solve by the traditional numerical methods. The integral equations for the electric potential in aniso- tropic half-spaces are established. Green's function is obtained using the reflection and transmission image method in which five images are needed to fit the boundary condi- tions on the vertical interface and the air-earth surface. The effects of the anisotropy of the environments and the conductive body on the electric potential are illustrated with the aid of several numerical examples.

Direct current electric potential in an anisotropic half-space with vertical contact containing a conductive 3D body