 The Gazzi-Dickinson method came out of separate work by P. Gazzi in 1966 and William R. Dickinson, starting in 1970.Dickinson and his students (most notably Raymond Ingersoll, Steven Graham, and Chris Suczek) at Stanford University in the 1970s established the method and its use to use the composition of sandstones to infer tectonic processes.This was in contrast to ideas presented by sedimentary geologists at Indiana University at the time, who used the more traditional "QFR" or "rock fragment" method of Robert Folk (1974) (which later grew into the Folk classification scheme), in which all grains that are connected are considered rock fragments, and the individual components are disregarded.