Ancient Maize Map

Information

ID: 496
Other ID: GX-9458
Type: MicroSample
Subtype: starch grain
Site: Loma Alta
Depositional context: midden

Maize starch granules (n=4) were recovered from charred organic residues on the inner surface of a ceramic sherd (FS884, Sample 11C). The date was taken from associated charcoal recovered from the same layer and context (Zarrillo et al. 2008:5008).

Radiocarbon Date

Lab number: GX-9458
Dating method: AMS
Directly dated: No
Dated material: charcoal
Contaminated?: No
Lower cal BP (years): 6182
Median cal BP (years): 5647
Upper cal BP (years): 5055
Uncal BP (years): 4960
± 1 σ (years): 210
δ13C:

Attached Files

References Cited

Zarrillo, S., D. M. Pearsall, J. S. Raymond, M. A. Tisdale and D. J. Quon
2008 Directly dated starch residues document early formative maize (Zea mays L.) in tropical Ecuador. Proceedings of the National Academy of Sciences, USA 105(13):5006–5011.

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