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- Lab number
- Beta-241138
- Material dated
- Shell
- Taxa dated
- marine, Olivella
- Type of date
- Archaeological
- Locality
- Contra Costa
- Date uploaded
- January 15, 2024
- Updater
- Wyoming team
- Date updated
- December 31, 2020
- Normalized Age
- 5290 ± 40
- Context
- Burial 479 (BL-09), in rip-rapped S-bank upstream W of bridge
- Comments
- ΔR = 290 ± 50