Quantitative interpretation of pulse EM measurements over a weathered kimberlite diatreme

Rai, S. S. ; Bhattacharya, B. B. (1986) Quantitative interpretation of pulse EM measurements over a weathered kimberlite diatreme Geophysical Prospecting, 34 (2). pp. 220-231. ISSN 0016-8025

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-...

Related URL: http://dx.doi.org/10.1111/j.1365-2478.1986.tb00464.x

Abstract

The application of pulse EM and MAXMIN II systems in search of a kimberlite diatremes under conducting cover has been demonstrated through a field example. The effectiveness of the PEM system in the search for conductive zones of economic importance and in discrimination against geologic noise such as overburden has been investigated. The transient observation has been transformed to equivalent half-space resistivities at various times. The feasibility of mapping thin conducting overburden using the PEM system has been studied by inverting the transient measurement to the thin infinite horizontal sheet conductance. The PEM measurement is shown to be an economic and effective tool for shallow geoelectric mapping.

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