Electrochemical modelling of self-potential anomalies |
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| Authors: | J Stoll J Bigalke E W Grabner |
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| Institution: | (1) Institut für Meteorologie und Geophysik, Feldbergstr. 47, D-60323 Frankfurt am Main, Germany;(2) Institut für Physikalische und Theoretische Chemie, Marie Curie Str. 11, D-60439 Frankfurt am Main, Germany |
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| Abstract: | An electrochemical model is proposed, which considers the redox conditions and the electrode kinetics at the mineral surface. Advanced modelling of self-potential (SP) anomalies over ore deposits takes into account the course of the redox potential distribution with depth and the oxidation-reduction processes acting at the mineral-electrolyte interface. The application of this model to a SP anomaly in the vicinity of the German Continental Deep Drilling Program (KTB) can explain the surface and borehole data and gives an estimation of the prevailing thermodynamical conditions in the ground.Exclusively, this paper deals with SP anomalies, which are associated with high conductive graphitic layers. It can be concluded that SP-anomalies give an important hint to electronical conducting structures in the earth's crust. |
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| Keywords: | self-potential redox potential geobattery electrode kinetics graphite |
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