The
Gazzi-Dickinson method is a point-counting technique used in geology to
statistically measure the components of a
sedimentary rock, chiefly
sandstone. The main focus (and most controversial) part of the technique is counting all
sand-sized components as separate
grains, regardless of what they are connected to. Gazzi-Dickinson point counting is used in the creation of
ternary diagrams, such as
QFL diagrams.