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Volume 22 Number 2
  • E-ISSN: 1365-2478

Abstract

A

In a transversely electrically anisotropic rock mass of arbitrary dip, the potential distribution about an electrode at arbitrary depth is the sum of the whole‐space potential about that electrode, plus the whole‐space potential about a postulated image electrode displaced up‐dip from the source position. Equipotential lines on the rock‐air surface are ellipses, elongated parallel to strike, and with centers displaced up‐dip from the surface projection of the electrode position. In metamorphosed rocks frequently encountered in mining geophysics, anisotropy is such that elongation is most marked in steeply dipping rocks, with displacement most evident in low to moderate dip.

Graphs relating the anisotropy coefficient to displacement and elongation assist in separation of the anisotropy‐related effects from those of a significant subsurface conductive body, particularly if surface resistivity sounding establishes the coefficient of anisotropy.

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2006-04-27
2024-04-20

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References

  1. Bhattacharya, P. K. and Patra, H. P., 1968, Direct current geoelectric sounding, Elsevier.
    [Google Scholar]
  2. Cowan, D. R., Allchurch, P. D. and Omnes, G., 1973Applied potential and drill hole logging methods on a copper‐zinc prospect in Western Australia. Presented at the Second International Conference on Geophysics of the Earth and Oceans, Sydney, Jan. 1973.
  3. Daknov, V. N., 1962, Geophysical Well Logging (English translation), Quart. Colo. School Mines57 (2) Apr. 1962.
    [Google Scholar]
  4. Grant, F. S. and West, G. F., 1965, Interpretation theory in applied geophysics, McGraw‐Hill.
    [Google Scholar]
  5. Habberjam, G. M., 1972, The Effects of Anisotropy on Square Array Resistivity Measurements, Geophysical Prospecting20, 249–266.
    [Google Scholar]
  6. Keller, G. V. and Frischknecht, F. C., 1966, Electrical Methods in Geophysical Prospecting, Pergamon.
  7. Ketola, M., 1972, Some points of view concerning mise à la masse measurements, Geoexploration10, 1–21.
    [Google Scholar]
  8. Nye, J. F., 1972, Physical Properties of Crystals, Oxford Univ. Press.
    [Google Scholar]
  9. Parasnis, D. S., 1966, Mining Geophysics, Elsevier.
    [Google Scholar]
  10. Parkhomenko, E. I., 1967, Electrical Properties of Rocks, Plenum Press.
    [Google Scholar]
  11. Pelton, W. H. and Hallof, P. G., 1971, The applied potential method in the search for massive sulphides. Presented at A.I.M.E. Annual Meeting, New York 1971 (McPhar Geophysics Ltd. reprint).
     [Google Scholar]
  12. Rainert, E. R., 1972, The Effects of Anisotropic Media on Resistivity Prospecting. Thesis, School of Earth Sciences, Macquarie University, North Ryde, N.S.W.
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  • Article Type: Research Article

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