Joseph Caldwell defined this in his Allatoona Reservoir report based upon his excavations there in the late 1940s.
This is a specific complicated stamped motif that is quite common during the Etowah period.
A line block design on what otherwise would be called Etowah Complicated Stamped pottery.
This is grit-tempered pottery.
Middle Mississippi period.
Northwest Georgia primarily, but occurs over most of the state.
Caldwell n.d.:15a.