Hydrogenetic Fe-Mn deposit (crust), Pacific (GMAT, 14D)
Pacific Ocean
Other media
- Type
- Other medium
Hydrogenetic Fe-Mn deposit (crust) of Rehkämper et al. (2002), Pacific, 4000-3400 m water depth; 12.2 ppm Tl, 21.7 % Mn and 22.0 % Fe. Hydrogenetic crusts, precipitated directly from seawater, have the heaviest ε205Tl (+10.4 to +14.3), unrelated to basin, depth or lead isotopes: constant fractionation of about +21 ε relative to seawater (α = 1.0021). Coordinates from Table 1.
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 12 ± 0.45 ε | 1 | Single analysis; ± 0.45 ε (2σ, external reproducibility on an in-house Fe-Mn crust); 12.2 ppm Tl. | Rehkämper et al. (2002), Thallium isotope variations in seawater and hydrogenetic, diagen… |
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.703 ± 0.003 | 1 | Single analysis; uncertainty estimated from the external precision of about 150 ppm (2σ). | Rehkämper et al. (2002), Thallium isotope variations in seawater and hydrogenetic, diagen… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.61 ± 0.002 | 1 | Single analysis; uncertainty estimated from the external precision of about 150 ppm (2σ). | Rehkämper et al. (2002), Thallium isotope variations in seawater and hydrogenetic, diagen… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 38.552 ± 0.006 | 1 | Single analysis; uncertainty estimated from the external precision of about 150 ppm (2σ). | Rehkämper et al. (2002), Thallium isotope variations in seawater and hydrogenetic, diagen… |
Deposits of the same type
- East Pacific Rise hydrothermal fluids at 9° N
- East Pacific Rise hydrothermal fluids at 21° N
- Hydrothermal manganese deposit, Galapagos Ridge (Pleiades II, D5-1A)
- Guaymas Basin hydrothermal fluids (Gulf of California)
- Hydrogenetic Fe-Mn deposit (crust), North Atlantic (BM1963.897)
- Deep-water diagenetic Fe-Mn deposit (nodule), Northwest Atlantic (USGS, Nod-A-1), USGS reference material
- Deep-water diagenetic Fe-Mn deposit (nodule), Pacific (USGS, Nod-P-1), USGS reference material
- Wilton natural wetland (Wisconsin) United States
Cite this page
IsoFind Atlas (2026). Hydrogenetic Fe-Mn deposit (crust), Pacific (GMAT, 14D), isotope signatures. https://www.isofind.tech/isotopes/en/sites/depot-fe-mn-hydrogenetique-croute-pacifique-gmat-14d/ (accessed 2026-10-16).
@misc{isofind2026hydrogeneticfemndepositcrustp,
title = {Hydrogenetic Fe-Mn deposit (crust), Pacific (GMAT, 14D), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/depot-fe-mn-hydrogenetique-croute-pacifique-gmat-14d/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16