Micro sample 513


Zea pollen grains, presumably maize because of their large size, first appear in a stratigraphic core at 865 cm below the lake surface (approximately 220 cm below the lake bed) (Watts and Bradbury 1982:60-61). No Zea pollen was found deeper than this level. A radiocarbon sample (QL-1342) was taken just below this depth, between 878 and 881 cm, so it is slightly older than the earliest maize pollen.

Radiocarbon Date

Attached Files


References Cited

Watts, W. A. and J. Platt Bradbury
    1982    Paleoecological Studies at Lake Patzcuaro on the West-Central Mexican Plateau and at Chalco in the Basin of Mexico. Quaternary Research 17:56-70.


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