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  • People
    • Primary Investigators
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  • Internships
    • About internship
    • Previous interns
  • Research
    • Publications
  • Resources
    • Ground Stone Use-Wear
    • News
  • Gallery
  • Contact Us

Ground Stone Use-Wear Comparative Database​

About this database:

The collection of photomicrographs and photographs posted here is intended to facilitate data sharing and comparisons between different experimental use-wear programs. The images can also function as a teaching aid, or as a supplemental resource for use-wear analysis of ground stone. For more information on the experiments that produced the images on this site click here

Focus stacking:

Photomicrographs designated as "stacked" have been digitally processed to enhance the depth of field and highlight topographical details that may be useful in discriminating between microscopic wear-patterns on the surface of the stone. A normal photograph, especially under high-magnification, is limited to a narrow depth of field and therefore can only bring topographical features within a certain range of depth into good focus. Focus stacking is a technique that involves taking numerous photographs at different focus levels and then using software to digitally "stack" them into a single composite image that contains the full range of focus of all of the photos. 
Picture
Photo of the same surface without focus-stacking.

Picture
​Focus-stacked micrograph of a sandstone tool use surface generated from a series of 6 individual photos. 60x Magnification


Photomicrographs sorted by groundstone material:

Sandstone
Basalt and Andesite
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