Wiggle-matched 14C dates anchored an 82-year floating cedar tree-ring chronology from the basal layer of a Mississippian Period mound to AD 1170 ± 9 (1σ) (outermost ring). Although numerical cross-matching showed preference for a temporal placement consistent with the 14C dates and visual matching, statistical scores were below critical thresholds for annual crossdating. Sapwood-corrected terminus post quem dates for the material, and their stratigraphic relationship with overlying dates, show that the earliest truncate mound construction at Mound 4 occurred after AD 1177. This date is informative for the timing of the transition of Kincaid to a major regional center and does not support an earlier hypothesis that Mound 4 was constructed in Early Kincaid times (AD 1050–1150). These results demonstrate the potential for archaeological collections to extend long tree-ring chronologies in the Midwestern U.S.
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27 July 2022
Wiggle-Matched Red Cedar from a Pre-Monumental Occupation at Kincaid Mounds, Illinois, USA
Nicholas V. Kessler,
Paul D. Welch,
Brian M. Butler,
Tamira K. Brennan,
Ronald H. Towner,
Gregory W. L. Hodgins
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Tree-Ring Research
Vol. 78 • No. 2
July 2022
Vol. 78 • No. 2
July 2022
floating chronology
Hawley-Bell
Kincaid Mounds
Mx°4
wiggle-matching