An experiment of spectral induced polarization

• Main Authors: L. Sambuelli, G. Ranieri, A. Godio, G. P. Deidda, B. Balia, G. Santarato
• Format: Article
• Language: English
• Published: Istituto Nazionale di Geofisica e Vulcanologia (INGV) 1994-06-01
• Series: Annals of Geophysics
• Subjects: mining; geophysics
• Online Access: http://www.annalsofgeophysics.eu/index.php/annals/article/view/4176

A Spectral Induced Polarization (SIP) survey was carried out in a mining test site in Sardinia (Italy). Measurements were developed along a profile by using an axial dipole-dipole array with 10 AB positions and 6 MN positions for cach AB. The amplitude and phase spectra of the apparent resistivity were acquired in the 0.25-4096 Hz frequeney range. The results obtained through the processing and inversion step seem to confirm that, with respect to the classical TD/FD Induced Polarization, SIP allows better discrimination of some important characteristics of mineral deposits such as mineral content and grain size.