The Resolution of Lithological Contacts through the Interpretation of Electrical Tomography Profiles

The use of geophysical techniques as method for examining the subsoil has increased last decades. Probably, Electrical Tomography is the most versatile method of geophysical prospecting for making analyses of subsoil and it allows to work with variable depths and to carry out a lot of objectives.It is necessary to do a very simple and easy procedure for obtaining resistivity images of subsoil; nevertheless it is very difficult and complex to interpret them. In this case, the study is focus in the applicability of Electrical Tomography in the determination of lithological contacts by means of the interpretation of electrical tomography profiles. This abstract presents the experimentation that shows how with a correct interpretation of the electrical tomography profiles can be deduce from the surface, in a non-destructive way, the location, the depth and the approximate size of every material that make up the subsoil.