Al-Hisa
Central Jordan, Jordanie
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. Al-Hisa Phosphorite Formation, Late Campanian (about 73 Ma). 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 |
|---|---|---|---|---|
| 0.707729 | 1 | phosphate rock (bulk) Single analysis; sample JO-1. | Hill et al. (2024), Reconstructing the depositional environment and diagenetic modificati… |
δ238U in ‰ (per mil) Values of the same system
Standard : NBL CRM 112-A
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.181 ± 0.023 ‰ | 1 | extracted carbonate fluorapatite (CFA) Single analysis; sample JO-1; modern seawater at -0.38 ‰ for comparison. | Hill et al. (2024), Reconstructing the depositional environment and diagenetic modificati… |
δ234U in ‰ (per mil) Values of the same system
Standard : équilibre séculaire
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 1.96 ± 8.65 ‰ | 1 | extracted carbonate fluorapatite (CFA) Single analysis; sample JO-1; a departure from 0 signals uranium mobility within the last two million years. | Hill et al. (2024), Reconstructing the depositional environment and diagenetic modificati… |
Deposits of the same type
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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). Al-Hisa, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/al-hisa/ (accessed 2026-10-15).
@misc{isofind2026alhisaisotopesignatures,
title = {Al-Hisa, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/al-hisa/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15