Taïba
Thiès Region, Senegal
OtherP
- Type
- Marine sedimentary phosphorite (carbonate fluorapatite)
Phosphate rocks studied by Hill et al. (2024) to reconstruct redox conditions and diagenesis: U, Sr and rare earths carried by carbonate fluorapatite; samples taken at mines or from the Julius Kühn Institute archives. Taïba Formation, Middle Eocene to Oligocene (about 35 Ma); depleted light rare earths; two 87Sr/86Sr values depart from the seawater curve, a sign of late diagenesis. Coordinates not given.
87Sr/86Sr isotope ratio, no unit Values of the same system
Standard : NIST SRM 987
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.707727 ± 0.001022 | 0.706628 / 0.70865 | 3 | phosphate rock (bulk) Mean and standard deviation recalculated from 3 analyses, samples SN-1, SN-2, SN-3. | Hill et al. (2024), Reconstructing the depositional environment and diagenetic modificati… |
| 0.707822 ± 0.000822 | 0.706993 / 0.708637 | 3 | extracted carbonate fluorapatite (CFA) Mean and standard deviation recalculated from 3 analyses, samples SN-1, SN-2, SN-3. | Hill et al. (2024), Reconstructing the depositional environment and diagenetic modificati… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 20.02 ± 0.45 ‰ | 19.7 / 20.34 ‰ | 2 | rock phosphate (PO4 oxygen) Mean and standard deviation recalculated from 2 analyses, samples SN-2, SN-3. | Hill et al. (2024), Reconstructing the depositional environment and diagenetic modificati… |
Deposits of the same type
- Central African Copperbelt (whole province) DR Congo and Zambia
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- Stelvio Italy
- Oris Italy
- Kupferschiefer, Lubin-Sieroszowice district Poland
- Timna Israël
- Datangpo-type manganese (Gaolou, Minle, Zhenxing) China
- Eyller Bruch bog iron ore Germany
Cite this page
IsoFind Atlas (2026). Taïba, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/taiba/ (accessed 2026-10-15).
@misc{isofind2026taibaisotopesignatures,
title = {Taïba, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/taiba/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15