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ROCK SURFACE HARDNESS AS AN INDICATION OF EXPOSURE AGE: AN ARCHAEOLOGICAL APPLICATION OF THE SCHMIDT HAMMER*
Authors:M. W. BETTS  M. A. LATTA
Abstract:A Schmidt Hammer was employed in evaluating the surface hardness of rocks which line ancient anthropogenic pit features, known as Pukaskwa pits, on the north shore of Lake Superior, Canada. This technique offers a possible new method of producing relative ana absolute dates for such exposed stone features Analysis of the data has provided a relative chronology for the pit features, representing two distinct construction phases. The range of absolute dates generated from the data indicates that the pits were likely constructed by Blackduck peoples c. 900 to 400 years BP.
Keywords:CANADA  ONTARIO  BLACKDUCK  OJIBWA  SCHMIDT HAMMER  PETROFORMS  PUKASKWA PITS  RAISED BEACHES  STRANDLINES  SURFACE HARDNESS WEATHERING RINDS  DATING TECHNIQUES  EXPOSURE AGE
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