Tombs, J.M.C.. 1980 A study of induced polarisation decay curves. Institute of Geological Sciences, 12pp. (WK/AG/80/130) (Unpublished)
Abstract
Conventional induced polarisation surveys measure essentially the
maenitude of the IP effect, whether expressed as frequency effect or
chargeability. The possibility of deriving additional information f,om IP
measurements has attracted many workers motiviated by the need to recoGnise
or remove electromagnetic coupling and the desire to discriminate between
causative minerals according to their composition or texture. Pyritic
black shales, for example, are a common cause of strong IP anomalies of no
economic interest.
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