1887
Volume 32 Number 1
  • E-ISSN: 1365-2478

Abstract

A

The renewed interest in the self‐potential method of exploration for mineral deposits gives an understanding of the self‐potential mechanism new importance. The cause of SP anomalies in general lies in the interference between simultaneously occurring nonequilibrium phenomena. However, theories of the mechanism of mineral SP anomalies generally relate the SP anomaly to the equilibrium potential of the chemical reaction supposed to occur on the ore body surface. In this paper, I reformulate these equilibrium mechanisms in terms of nonequilibrium thermodynamics. The result is that the SP anomaly depends not on the equilibrium potential alone, but also on the potential resulting from current transferred across the ore body—electrolyte interface. It is not possible to calculate the overpotential theoretically because of the number of complicating factors, and experimental data are not available. This does not imply that SP data are uninterpretable quantitatively. SP data may be interpreted similarly to other potential field data.

Loading

Article metrics loading...

/content/journals/10.1111/j.1365-2478.1984.tb00716.x
2006-04-27
2020-04-04
Loading full text...

Full text loading...

References

  1. Bhattacharya, B. B. and Roy, N.1981, A note on the use of a nomogram for self‐potential anomalies, Geophysical Prospecting29, 102–107.
    [Google Scholar]
  2. Bockris, J. and Reddy, A. K. N.1970, Modern Electrochemistry, Vol. 1, Plenum Press, New York .
    [Google Scholar]
  3. Corwin, R. F., Demoully, G. T., Harding, R. S., Jr and Morrison, H. F.1981, Interpretation of self‐potential survey results from the East Mesa Geothermal Field, California, Journal of Geophysical Research86, 1841–1848.
    [Google Scholar]
  4. Corwin, R. F. and Hoover, D. B.1979, The self‐potential method in geothermal exploration, Geophysics44, 226–245.
    [Google Scholar]
  5. De Witte, L.1948, A new method of interpretation of self‐potential field data, Geophysics13, 600–608.
    [Google Scholar]
  6. Fitterman, D. V.1979, Calculations of self‐potential anomalies near vertical contacts, Geophysics44, 195–205.
    [Google Scholar]
  7. Kittel, C.1971, Introduction to Solid State Physics, Wiley, New York .
    [Google Scholar]
  8. Meiser, P.1961, A method of quantitative interpretation of self‐potential measurements, Geophysical Prospecting10, 203–208.
    [Google Scholar]
  9. Nourbehecht, B.1963, Irreversible thermodynamic effects in inhomogeneous media and their applications in certain geoelectrical problems, PhD thesis, Massachusetts Institute of Technology.
  10. Paul, M. K.1965, Direct interpretation of self‐potential anomalies caused by inclined sheets of infinite horizontal extensions, Geophysics30, 418–423.
    [Google Scholar]
  11. Rao, B. S. R., Murphy, I. V. R. and Reddy, S. J.1970, Interpretation of self‐potential anomalies of some geometric bodies, Pure and Applied Geophysics78, 66–77.
    [Google Scholar]
  12. Roy, A. and Chowdhury, D. K.1959, Interpretation of self‐potential data for tabular bodies, Journal of Science and Engineering Research3, 35–54.
    [Google Scholar]
  13. Sato, M. and Mooney, H. M.1960, The electrochemical mechanism of sulfide self‐potentials, Geophysics15, 226–249.
    [Google Scholar]
  14. Sill, W. R.1983, Self‐potential modeling from primary flows, Geophysics48, 76–86.
    [Google Scholar]
  15. Sivenas, P. and Beales, F.1982, Natural geobatteries associated with sulphide ore deposits, Journal of Geochemical Exploration17, 123–143.
    [Google Scholar]
  16. Zachos, K.1963, Discovery of a copper deposit in Chalkidike Peninsula, Northern Greece, Institute of Geological Subsurface Research8, 1–26.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journals/10.1111/j.1365-2478.1984.tb00716.x
Loading
  • Article Type: Research Article
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error