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Lab number
WSU-3512
Material dated
Seeds
Taxa dated
Zea mays
Type of date
Archaeological
Locality
San Juan
Date uploaded
January 18, 2024
Updater
Wyoming Team
Date updated
December 31, 2020
Normalized Age
1980 ± 60
δ13C (per mil)
-10.0
Context
Sample from near top of Stratum A-6 in Matson's (1991:Figure 2.33) stratigraphic test of site; all deposits exposed in the test are Basketmaker and yielded a variety of materials. Date corrected for isotopic fractionation using an assumed delta value of -10 per mil and adding 250 years to the reported date of 1730+/-60.
Additional information
radiometric
Comments
Sample from a vertical column of Basketmaker II midden 1-30 cm below the surface; date corrected here by adding 250 years

References