Ancient Maize Map

Information

ID: 497
Other ID: Beta-9564
Type: MicroSample
Subtype: starch grain
Site: Loma Alta
Depositional context: midden

A total of 50 maize starch granules were recovered from three ceramic sherds and their associated sediment samples: FS1056, ceramic sample 12 (n=6) and sediment sample 148 (n=3); FS1063, ceramic sample 10 (n=9) and sediment sample 156 (n=2); FS1050, ceramic ample 9 (n=25) and sediment sample 108 (n=5). The radiocarbon date for all of these samples comes from associated charcoal recovered from the same stratigraphic layer and depositional context as the ceramic/sediment samples (Zarrillo et al. 2008:5007-8).

Radiocarbon Date

Lab number: Beta-9564
Dating method: AMS
Directly dated: No
Dated material: charcoal
Contaminated?: No
Lower cal BP (years): 5290
Median cal BP (years): 5109
Upper cal BP (years): 4881
Uncal BP (years): 4510
± 1 σ (years): 40
δ13C:

Attached Files

Fig%202%20c%20starch%20aggregate%20fs%201063%20zarillo%20et%20al%202008%20pnas

Maize starch aggregate recovered from ceramic sample FS1063, sample 10 (Zarrillo et al. 2008:5008, Fig. 2 c)(scale bar = 20 μm).

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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