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- Lab number
- USGS-36
- Material dated
- Shell
- Taxa dated
- marine, Ostrea lurida
- Type of date
- Geological
- Locality
- San Mateo
- Date uploaded
- January 15, 2024
- Updater
- Wyoming team
- Date updated
- December 31, 2020
- Normalized Age
- 4830 ± 130
- δ13C (per mil)
- -0.3
- Context
- Borehole 0.5 km N of W end of Dumbarton Bridge, elev. 1.2 m (3.9 ft) amsl, lower part of Oyster mud