Hydrogenetic Fe-Mn deposit (crust), Indian Ocean (Antipode, 109D-C)
Indian Ocean
Other media
- Type
- Other medium
Hydrogenetic Fe-Mn deposit (crust) of Rehkämper et al. (2002), Indian Ocean, 5698-5178 m water depth; 73.3 ppm Tl, 19.8 % Mn and 24.2 % 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 |
|---|---|---|---|---|
| 13.9 ± 0.45 ε | 1 | Single analysis; ± 0.45 ε (2σ, external reproducibility on an in-house Fe-Mn crust); 73.3 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 |
|---|---|---|---|---|
| 18.807 ± 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 |
|---|---|---|---|---|
| 15.66 ± 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 |
|---|---|---|---|---|
| 38.869 ± 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
- Hydrogenetic Fe-Mn deposit (crust), Indian Ocean (DODO, 232D)
- South Atlantic, station 8 of the GEOTRACES 40° S cruise
- Hydrogenetic Fe-Mn deposit (nodule), Southern Ocean (TBD 463, 6854-6)
- South Atlantic, station 3 of the GEOTRACES 40° S cruise
- Atlantic, Cape Basin, station ANT XXIII/1 69/26
- South Atlantic, station 11 of the GEOTRACES 40° S cruise
- Subantarctic South Atlantic, Meteor Rise (TSO-5)
- Southern Ocean (Atlantic sector), Polar Front, station PS71-104
Cite this page
IsoFind Atlas (2026). Hydrogenetic Fe-Mn deposit (crust), Indian Ocean (Antipode, 109D-C), isotope signatures. https://www.isofind.tech/isotopes/en/sites/depot-fe-mn-hydrogenetique-croute-ocean-indien-antipode-109d-c/ (accessed 2026-10-16).
@misc{isofind2026hydrogeneticfemndepositcrusti,
title = {Hydrogenetic Fe-Mn deposit (crust), Indian Ocean (Antipode, 109D-C), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/depot-fe-mn-hydrogenetique-croute-ocean-indien-antipode-109d-c/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16