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induced-polarization method
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induced-polarization method

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Quick Summary

The induced-polarization method is a geophysical technique used in mineral exploration. It relies on the principle that when an electric current passes across an interface where conduction changes from ionic to electronic, a charge builds up. This charge accumulates shortly after the current begins and takes time to dissipate after the current is removed.1

This method is employed to detect sulfide ore bodies. By measuring this charge buildup, geophysicists can identify the presence of such deposits. Induced polarization is one of several electrical methods used in exploration, which also include self-potential and resistivity methods, each leveraging different physical properties to map underground features.1

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
3 Britannica Sources
  1. Earth exploration - Electrical and electromagnetic methods
  2. electric polarization
  3. electrostatic induction

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