The Third Dimension in Site Structure: An Experiment in Trampling and Vertical Dispersal

  title={The Third Dimension in Site Structure: An Experiment in Trampling and Vertical Dispersal},
  author={Diane Gifford-Gonzalez and David Damrosch and Debra R. Damrosch and John Pryor and Robert L. Thunen},
  journal={American Antiquity},
  pages={803 - 818}
Abstract Two measured and weighed assemblages of lithic debitage were subjected to human treadage, one set on a compact sandy silt (“loam”) substrate, the other on unconsolidated sand. The assemblages were excavated, plotted in three dimensions, and documented for damage. Downward migration of pieces at the loam site was minimal: fracture of small pieces was the dominant damage pattern. Most sand site pieces migrated to 3-8 cm depth; vertical distribution of pieces approximated a normal curve… 

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