About the Specimen Imagery

Scanning of the hafted dart points in this study involved taking approximately 500 CT slices, from the tips of the points to slightly beyond the base of the points (where only the wood foreshaft was present). From this raw digital imagery, rotating "movies" with 3-dimensional details were generated for each chipped-stone point.

The 3D images shown in Rotate Haft and Isolate Point movies have been colorized to represent the weapons in their original state. A series of Cross-section slices from each specimen were selected to show details of the interior haft areas.

The high resolution, non-destructive, X-ray computed tomography density maps were made at the High-Resolution X-ray Computed Tomography Facility in the Department of Geological Sciences in the Jackson School of Geosciences, University of Texas at Austin