Archaeology in the Pecan tree holes, chopper specifics.

From the two choppers pictured below a few more interesting details can be gleaned.

The one on the left was only partially completed then discarded without ever being used.

This can be determined because the flaking is not finalized and the edge shows no damage from use. Stone, although hard, is also brittle and so sometimes does not flake away exactly as desired. That can cause a stone tool to be discarded part way through the manufacture process.

Also because it is used to pound and chop at things smaller flakes will break away and the edge will become blunt. We see that with the chopper on the right, which are clear indications of use.

A close look at the working edge and one can clearly see the chipped and blunted edge.

This one was clearly a tool that was well utilised before being discarded.