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NYSAA Bulletin No. 107 — Dogan Point Archaeological Site — Passage 30 (part 6)

Herbert C. Kraft et al. (1994) 249 words View original →

[Herbert C. Kraft et al. (1994)] For a delta R between -200 and ± 200 14 C years, the earliest possible evidence for shellfish use on the lower Hudson was 7260-6600 years before present (Little 1994). There is no means by which one can support an argument that all the 6000-to-5000-year-old shell dates from Dogan Point are systematically 1000 to 2000 years old (Harold Krueger, personal communication 1992). If the culprit were relic shells harvested with live shells, then all shells dated just happened to be relic shells. The old carbon problem, or reservoir effect, has been shown to be quite small. Leaching of calcium carbonate surely affects these shells, but the effect is to make the dates younger than true, not older. The impact of the delta 13C correction when applied to Brennan's raw dates is to make the ages older. Samples have come from 15 cm below the surface to as deep as 100 cm below the surface and from several parcels of the midden. There are charcoal dates from Wicker's Creek and Croton Point #2 (5900 ± 200 rcy) that also fall into this time period. Paired charcoal and shell dates 4500 to 5000 years old are in agreement from the Piping Rock, Croton Point, and Twombly Landing sites (Brennan 1974:Table 1). With the recovery of a Neville point, there are now artifacts older than the dates. Future Work While the standard archaeological analyses are completed for Dogan Point and await publication, several types of analysis are scheduled for the near future.