Predictive profiling. The 5-point method of interpretation (magnetic gradients)

The combination of a high precision, direct reading, digital, magnetic gradiometer with a hand-held, programmable calculator enables continuous processing of the magnetic data to be carried out in the field. Furthermore, using a development of a method originally introduced by Werner (1953) it is possible now to predict a contact that is being approached as progress is made along the survey-profile. The prediction of the position of a geological contact allows for detailed examination to be made when the contact is reached. The method is referred to as 'predictive profiling'.