Hydrothermal manganese deposit, Galapagos Ridge (Pleiades II, D5-1A)
Pacific Ocean
Other media
- Type
- Other medium
Hydrothermal manganese deposit of Rehkämper et al. (2002), Galapagos Ridge, 3822 m water depth; 0.68 ppm Tl, 54.5 % Mn and 0.47 % Fe. Hydrothermal Mn deposits, precipitated below the sediment-water interface from diffuse fluids, range from -5.9 to +7.0 and their ε205Tl increases with Mn/Fe (r = 0.91) and 1/Tl: Tl taken from proximal, hot fluids with little fractionation (Tl-rich, light end-member), or from distal, cold fluids with stronger fractionation (Tl-poor, heavy end-member). 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 |
|---|---|---|---|---|
| 4.1 ± 0.45 ε | 1 | Single analysis; ± 0.45 ε (2σ, external reproducibility on an in-house Fe-Mn crust); 0.68 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 |
|---|---|---|---|---|
| 18.849 ± 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 |
|---|---|---|---|---|
| 15.652 ± 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 |
|---|---|---|---|---|
| 38.78 ± 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), Pacific (GMAT, 14D)
- East Pacific Rise hydrothermal fluids at 9° N
- Cariaco Basin, water column Venezuela
- Hydrogenetic Fe-Mn deposit (crust), North Atlantic (ArcI TR079, D-14)
- East Pacific Rise hydrothermal fluids at 21° N
- 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
- Guaymas Basin hydrothermal fluids (Gulf of California)
Cite this page
IsoFind Atlas (2026). Hydrothermal manganese deposit, Galapagos Ridge (Pleiades II, D5-1A), isotope signatures. https://www.isofind.tech/isotopes/en/sites/depot-hydrothermal-de-manganese-ride-des-galapagos-pleiades-ii-d5-1a/ (accessed 2026-10-16).
@misc{isofind2026hydrothermalmanganesedepositg,
title = {Hydrothermal manganese deposit, Galapagos Ridge (Pleiades II, D5-1A), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/depot-hydrothermal-de-manganese-ride-des-galapagos-pleiades-ii-d5-1a/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16