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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