Borehole imaging tool

A method to generate a visual representation of a formation, comprising:

• inducing an alternating magnetic field into a formation, the alternating magnetic field in turn inducing an induced electric field;
• determining, at two electrode buttons of an array of electrode buttons, a differential voltage between the two electrode buttons, wherein determining the differential voltage between the two electrode buttons is based on a strength of the alternating magnetic field and a strength of the induced electric field proximate the two electrode buttons;
• exciting the array of electrode buttons with a galvanic source;
• determining a current through the array of electrode buttons;
• estimating, based on the differential voltage between the electrode buttons and the current flowing through the array of electrode buttons, a resistivity and magnetic susceptibility of the formation proximate the array of buttons;
• and
• constructing a visual representation of the formation based on the resistivity and magnetic susceptibility of the formation.

A borehole imaging tool, comprising:

• a pad;
• one or more coils axially symmetrically deployed on the pad and wrapped around the borehole imaging tool;
• an array of electrode buttons deployed on the pad, wherein one or more electrode buttons of the array of electrode buttons are placed along an axis of symmetry of the one or more coils, and wherein each electrode button of the array of electrode buttons being operable to detect an induced electric field;
• one or more magnetometers, each of the one or more magnetometers being collocated with a different button of the array of buttons;
• a galvanic source operable to inject an electrical current through one or more electrode buttons of the array of electrode buttons into a formation;
• and
• at least one return electrode operable to receive the current.