Ancient Maize Map

Information

ID: 493
Other ID: GX-7699
Type: MicroSample
Subtype: starch grain
Site: Loma Alta
Depositional context: midden

Four starch granules were recovered from two ground stone tools: FS689, Sample SS281 (n=2) and FS689, Sample SS281-2 (n=2). The date was made on associated charcoal from the same layer and context (Zarrillo et al. 2008).

Radiocarbon Date

Lab number: GX-7699
Dating method: AMS
Directly dated: No
Dated material: charcoal
Contaminated?: No
Lower cal BP (years): 5596
Median cal BP (years): 5233
Upper cal BP (years): 4852
Uncal BP (years): 4630
± 1 σ (years): 160
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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