the transmitter to propagate a transient electromagnetic signal into the formation c detecting a response signal that has propagated through the formation as a result of the transient signal in step d calculating a derived quantity for the formation as a function of time based on the detected response signal for the formation e plotting the derived quantity for the formation against time f moving the tool to at least one other position within the wellbore and repeating steps to g predicting an anomaly in the formation application_number US 47667009 A description embodiments of the invention relate to a system and method for determining distance and direction to an anomaly in a formation within a wellbore both frequency domain excitation and time domain excitation have been used to excite electromagnetic fields for use in anomaly detection in frequency domain excitation a device transmits a continuous wave of a fixed or mixed frequency and measures responses at the same band of frequencies in time domain excitation a device transmits a square wave signal triangular wave signal pulsed signal or pseudo random binary sequence as a source and measures the broadband earth response sudden changes in transmitter current cause signals to appear at a receiver caused by induction currents in the formation the signals that appear at the receiver are called transient responses because the receiver signals start at a first value and then decay or increase with time to a constant level the technique disclosed herein implements the time domain excitation technique as set forth below embodiments of the invention propose a general method to determine a direction to a resistive or conductive anomaly using transient em responses as will be explained in detail the direction to the anomaly is specified by a dip.