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- Lab number
- Beta-110797
- Material dated
- Charcoal
- Taxa dated
- Mesquite, Prosopis glandulosa
- Type of date
- Archaeological
- Locality
- Zapata
- Date uploaded
- January 18, 2024
- Updater
- Wyoming Team
- Date updated
- December 31, 2020
- Measured Age
- 2400 ± 40
- Normalized Age
- 2570 ± 60
- δ13C (per mil)
- -13.3
- Context
- BT-11 (47); TP 29, Depth 47cm, Hearth
- Additional information
- AMS
- Comments
- Sample # 41ZP364-380-4; Note: Measured in accelerator and is in error. Direct C13/C12 ratio analysis resulted in value of -23.5% (average two runs). A second date run on the remaining sample yeilded a conventional C14 age of 2570 + 60 with a C13/C12 ratio of-13.3%. (Quigg, 2000; pp. 139).