Full text loading...
-
Negative Induced Polarization and its Possible Origin
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Engineering and Mining Geophysics 2020, Sep 2020, Volume 2020, p.1 - 8
Abstract
Negative IP anomalies sometimes can be found during field survey. In publications their origin explain by the influence of contrast horizontal layering of type K and Q or by the influence of lateral resistivity contrast that influence on IP anomalies according to J.R. Wait. One other hypothesis of negative IP anomalies origin exists as intrinsic property of pure clay with definite humidity and in case of rather high current density of polarizable current (Brandes 2003, 2005). The authors found IP anomaly at student field practice in Kaluga region and studied its space position, lithological characteristic and relation with close laying layer of highly resistive sand. Though negative IP anomaly was found in clay layer its more probable origin resulted from closely situated highly resistive sand layer.