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- Lab number
- M-1387
- Material dated
- Charcoal
- Type of date
- Archaeological
- Locality
- Keweenaw (Isle Royal)
- Submitter
- T. Bastian
- Date uploaded
- January 17, 2024
- Updater
- Wyoming Team
- Date updated
- December 31, 2020
- Measured Age
- 3220 ± 130
- Normalized Age
- 3220 ± 130
- δ13C (per mil)
- -25.0
- Significance
- Archaic; Archaïque
- Context
- Pit 77, a thin dark stratum 4.3 ft depth, Old Copper culture
- Additional information
- Radiometric