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- Lab number
- M-40
- Material dated
- Charcoal
- Type of date
- Archaeological
- Locality
- Allamakee
- Submitter
- P. Beaubien
- Date uploaded
- January 17, 2024
- Updater
- Wyoming Team
- Date updated
- December 31, 2020
- Measured Age
- 900 ± 150
- Normalized Age
- 900 ± 150
- δ13C (per mil)
- -25.0
- Significance
- Late Woodland
- Context
- conical mound 55, Effigy Mound culture
- Additional information
- AMS
- Comments
- carbon black method