Residuos Macro-Botánicas 634


Charred maize kernels were found in Feature 48, a Mississippian storage/refuse pit "cut by wall trenches of two Mississippian houses in house location occupied by sequence of four Mississippian houses" (Crane and Griffin 1966). The initial radiocarbon date (M-1722) that resulted from this sample was later than expected 430 +/- 100 (Crane and Griffin 1966:267). The authors tested the possibility that isotopic fractionation in the maize had contributed to this anomalous date by submitting charred maize cob fragments from Feature 2 to check the C12/C13 ratio (Crane and Griffin 1968:79). Since this was the case, a second radiocarbon date (M-1772r) from this same maize sample was processed and the revised date of 665 +/- 100 was obtained "by adding 235 yr to previously determined B.P. age to offset the anomalous enrichment of C14 in the corn during its life" (Crane and Griffin 1968:79). For details about how this revised date was obtained please refer to Crane and Griffin (1968:79).

This date has been reported in the Canadian Archaeological Radiocarbon Database (CARD) (Morlan and Betts 1999).

Radiocarbon Date

Archivos Adjuntos


Las Referencias Citadas

Crane, H. R. and J. B. Griffin
    1966    University  of  Michigan  Radiocarbon  Dates  XI. Radiocarbon 8(1):256-285.

Crane, H. R. and J. B. Griffin
    1968    University  of  Michigan  Radiocarbon  Dates  XII. Radiocarbon 10(1):61-114.

Morlan, R. E. and M. Betts
    1999-2005 Canadian Archaeological Radiocarbon Database. Canadian Museum of Civilization, Gatineau, Quebec.


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